What I'm getting at is that VTEC and 4 wheel steering and whatnot all were invented/developped while racing, just like Audi pionneered the use of all-wheel drive with the Quattro in the WRC, and then ported over to the road-going cars in one way or another. We could use carbon fiber as another example... NASCAR is pretty much as basic as you can get, aside from the recent addition of EFI, the cars are mechanically still very similar to what they were 30-35 years ago, safety improvements aside. I don't think we'll ever see carbon tubs and independent suspension on those things, or direct injection DOHC engines with some sort of hybrid system, and in a way, it's okay like that, but the manufacturers that use racing to "improve the breed" for lack of a better term, see little to no interest in joining the series.