23 January 2013 Last updated at 09:46 ET

Fatal car hit wall 'like a bomb' in Aberdeenshire

A car involved in a fatal Aberdeenshire crash was going well over the speed limit and hit a wall "like a bomb", a court has heard.

William Webber, 36, died following an accident in a Porsche in Strichen in April 2011.

Douglas Calder, 38, denies causing his death by driving dangerously.

Pc James Duncan told the second day of the trial at the High Court in Aberdeen a loss of control would have well in excess of 70mph.

Advocate depute Iain McSporran asked the officer if he could tell anything from the distance of the first impact mark with the wall and the final resting place of the car.

Car tumbled

Pc Duncan described it as a " huge distance".

He said: "There must have been some speed involved."

Asked to clarify "some speed", he replied: "A fast speed".

Pc Duncan said: "The loss of control was well in excess of 70mph."

Mr McSporran asked: "What kind of impact did it (the car) have?"

The police officer replied: "It was like a bomb going off."

The car then tumbled four-and-a-half times, the court heard.

The trial continues.