Blistering Button tackles London Triathlon
After six grands prix victories this season, watching Jenson Button cross the finish line has become a familiar sight in Formula 1 but on Sunday the Brawn driver was a little bit harder to spot.
With a final burst of adrenalin, the world championship leader flashed past the finish in a blur of grey shorts with his hair slicked flat to his face.
Was that him?
The watching Mole couldn't be sure because Button was just another face among 6,000 amateur athletes testing their mettle in the London Triathlon.
Luckily the flash of the snappers' cameras and the extra-special cheers gave it away.
It was Button, and what's more he had raced through the Olympic distance - a 1500m swim, 40km bike ride and a 10km run - in a personal best time of two hours and seven minutes.
"I think I'm going to collapse now," joked a surprisingly buoyant Button afterwards.
"I didn't push too hard in the swim as I have done before and I got it done in 24 minutes so I'm very happy.
"I was massively quicker than I expected on the bike, one hour and three minutes, and then I took the first lap of the run relatively easy before giving it the beans on the second lap to finish in 35.02 mins.
"I feel really good. There was only one thing my trainer failed on. He told me not to fill my water bottle up to the top because I wouldn't drink it all but I got halfway round and it was completely gone, so I struggled a bit there."
Button was taking part in the triathlon to raise funds for the Make A Wish Foundation but to spice things up he also entered his Brawn GP race engineers Andrew Shovlin and Peter Bonnington in Saturday's sprint race.
"People think they sit in a truck and push buttons while I sit down and drive a race car, which they think is easy, but this proves that we do train a lot," Button said.
"I pushed myself to the limit in the triathlon and it is different to driving a car for a start my heart beat is a lot higher when I'm swimming and running.
"But when I'm racing the lactic acid builds up through the vibrations and all the G-forces make it very tiring.
"It's great to do this for F1 because it shows how much the drivers have to train and that we don't just sit there and turn the wheel."
For Shov and Bono, who finished almost exactly a minute ahead of his fellow race engineer in 1:18.14, it was a chance to turn the tables on Button and get some racing tips from a driver.
"Jenson's been teaching us what to do," says Shov. "It was a role reversal because he was telling me how to save time!"
Button revealed it had been a bit of a team effort by Brawn to get him race ready for the triathlon.
He even popped himself on the bike in the team's wind tunnel in Brackley so the engineers could hone his aerodynamics.
"The team were looking at aero for the Tour de France and asked me if I wanted a go," explained Button.
"It was good because Ross Brawn came over to have a little look - he was a cyclist back in the day. I'm very lucky because I have had a lot of help."
After his exertions in the capital, Button is heading home to Monaco to take some time off before F1 rolls into Valencia for the European Grand Prix on 23 August.
Button, who leads the championship by 18.5 points from Red Bull's Mark Webber, will rejoin battle with the Red Bulls, Lewis Hamilton's McLaren, which returned to winning ways in Hungary, and a chap called Michael Schumacher, who is back behind the wheel of a Ferrari in place of the injured Felipe Massa.
But before then the 29-year-old is ready to relax and recover with just one thing playing on his mind.
"I'm worried about getting sand from the beach in the blisters on my feet," he frowned. "That's the worse thing.
"Otherwise, it'll take a couple of weeks for these legs to recover and then we are going to get back on track and challenge for the win."