There was a big discussion on a motorsport thread about the first use of NACA ducts in motor racing, I suspected it would be claimed by the USA, and probably Nascar, I think the argument is still reigning!
[quote user="Anton Redman"]Most tunning places seem to fit sound systems,glass fibre spoilers and Nascar ducts the wrong way round. [/quote] Maybe if they were fitting NACA ducts they'd put them the right way around? (sorry just being picky!!)