How terrible to lose yet another great (British) driver in an aviation accident.
Not following the BTCC too closely, I was not all that familiar with David's achievments as a driver (other than that his computer-likeness on "TOCA 2" was bloody difficult to beat ;) ), but I grew to appreciate his commentating for WTCC on Eurosport a lot - those broadcasts will never be the same for me without his participation :(
My condolences go out to the family and loved ones of all those on board the aircraft.