The battles facing McLaren
When McLaren bolted their new Formula 1 car together for the first time on Thursday night in preparation for Friday's 2010 launch, they hit upon a problem. It wouldn't fit in the lift in the team's factory.
The engineers solved that little conundrum - caused by the car being longer than last year because of the bigger fuel tank needed following the banning of in-race refuelling - by taking the car around a different way. But McLaren might find other difficulties they face this year harder to resolve.
Friday's launch at title sponsor Vodafone's plush headquarters on the outskirts of Newbury in Berkshire was typical of McLaren for its smooth professionalism but, as last year proved, the realities of racing in the white heat of F1 competition are not always so easy to manage.
To McLaren's credit, they did not try to dodge the issues - in fact, they had clearly worked hard on coming up with an answer to them. But it remains the case that a number of big question marks hang over the team as they head into a season that promises to be one of the most competitive in years.
McLaren team-mates Button and Hamilton weigh each other up but who will come out on top?"
There are four world champions on the grid for the first time since 1999 - and unlike 11 years ago all of them are driving for what are expected to be competitive teams.
McLaren have two, in Lewis Hamilton and Jenson Button, while seven-time champion Michael Schumacher is returning from retirement to drive for Mercedes - which won both world titles, with Button, as Brawn last year - and double winner Fernando Alonso, the last man to beat Schumacher in a straight fight for the title, has joined Ferrari.
It's a mouth-watering prospect, both for those involved and those watching, but it raises the stakes enormously.
For McLaren, the primary question, from which flow all others, is the one that hangs over all F1 team launches - how good is the car?
McLaren sounded confident on Friday, with team principal Martin Whitmarsh talking about "preparing more comprehensively than ever before". But they made similar noises last year - only to find that when they turned up with their car at the first test, it was more than two seconds off the pace.
No-one expects that to happen again in 2010, not least because as this is the second year following a major regulation change, the chances of the engineers missing their mark quite so dramatically are vastly reduced.
Nevertheless, the ban on refuelling, coupled with a reduction in front tyre width, introduces significant changes to the design of the cars, only one of which is that they are longer - as McLaren's lifts proved so clearly. It remains to be seen how well each team's designers have come up with answers to those questions.
Assuming the new MP4-25 is competitive, McLaren's other challenges in 2010 all stem from the fact they have such a strong driver pairing.
As Whitmarsh said, "it is a McLaren philosophy to have the two fastest drivers we can in the car". It is, though, a philosophy they have stuck with despite numerous problems in the past.
More recently, the year Hamilton and Alonso spent as team-mates at McLaren in 2007 involved similar levels of bitterness - even if in that case the biggest problem was the relationship between the Spaniard and then team boss Ron Dennis.
Button and Hamilton put on a good show on Friday. They joked with each other on stage, repeatedly underlined - to the point that it almost became a mantra - how important it was to work together, and generally gave the impression of getting on well. They even went to the lengths of telling the media that they had had dinner together in Newbury on Thursday night.
"Nobody knows who is going to come out on top in any team," Button said, "and that's why we're going racing - to fight it out. At the end of the year we will see who is going to do the best job. For now, we are going to work together and improve this car hopefully better than anyone else."
That, though, rather glosses over the issues involved, when in reality these two incredibly driven men are going head-to-head in equal machinery and at the end of the year one of them is going to have to face the fact that he has lost.
It's fair to say that most people expect that to be Button - Hamilton is widely regarded as the fastest driver in F1 (his comparison with a 41-year-old Schumacher will be particularly fascinating) - and the older man has already talked about what a "massive challenge" he faces going up against Hamilton.
But that is not to say that Button is setting out expecting to lose - on the contrary. He might appear laid back, but he is as intensely competitive as anyone in F1 and he will be doing everything within his power to try to ensure the opposite happens.
Whoever comes out on top at the end of the season, the battles along the way - both inside the team and on the track - will be hard and uncompromising, even if they are also, as Whitmarsh put it, "exciting, clean and open". And managing the demands of two such individuals will not be easy.
That intra-team battle could have other consequences, too. As has happened many times in the past, teams with two drivers going for the championship often find they end up losing out to those who, sooner or later, decide to concentrate on just one.
Equally, had McLaren concentrated on either Hamilton or Alonso in 2007, one of them would have been world champion. As it was, in the intensity of the battle between the two best drivers in the world, they lost sight of the bigger picture, and ended up tied on points and losing out by the narrowest of margins to Kimi Raikkonen and Ferrari.
This year, Ferrari and Mercedes also, on paper, have two drivers battling for supremacy.
At Ferrari, the contest between Alonso and Felipe Massa could be just as close as the one at McLaren, even if most people would expect the Spaniard to be a clear winner by the end of the season.
Mercedes, though, could well be a different matter. Schumacher might be 41, but nothing his team-mate Nico Rosberg has done in his career so far suggests he is going to be able to compete with one of the greatest drivers the world has ever seen.
So that raises the prospect of McLaren's two drivers competing for the title while taking points off each other, while all Mercedes' efforts go in one direction - just as Ferrari's did when Schumacher was there.
Whitmarsh was openly contemplating that very prospect on Friday, as well as that of competing against a company that, while it remains McLaren's engine supplier and sponsor, until last December also owned 40% of his team.
"We welcome the competition," Whitmarsh said on Friday. The remark referred to the battle between his team and the new one racing under the name of McLaren's engine supplier, but it could just as easily have referred to the internal battle between his two drivers.
It's a noble stance and one that, McLaren being what they are, will not change no matter what the outcome of the forthcoming season. But it is one that is almost guaranteed to make life more difficult.
As Whitmarsh says, "We've got a really exciting season on our hands."