Apart from it being an annoying advert, I would have thought Chitty would be entitled to free road tax as it was bulit and registered before 1973. Hence Chitty doesn't need to be clamped for road tax evasion.
*Puts on anorak* Actually it's got a straight 6 Ford engine with automatic transmission, the car was built by Alan Mann Racing. Special effects designed by John Stears who did most of the Bond films.
:-)
Gareth