The cars don't have to be perfect or unmodified but good enough to represent the marque.
But they mustn't be prone to overheating as the parade has some cheer leaders in it who stop and cheerlead at various stages.
It starts at 12am from Trafalgar square but you need to arrive at 9.30 and be booked in beforehand to take part.
If you are interested you cam PM me, if loads of people are interested I'll post his number and he can sort things out.
I said I'd run it up the flagpole and see if anyone salutes

* I don't know how Many.