I'd disagree that production processes have improved for building, quicker isn't really an improvement if the end product is inferior & it is.

I'd also argue that electronic reliance hasn't improved vehicles but rather masked deficiencies, some of the materials have improved, others not so much. 

 Alcohol is also a cleaner fuel but much more expensive and needs different & higher quality materials to use effectively & corn is most certainly not what you want to use as the feedstock.

Everything is distorted because of fiat & .gov 

 The current compression ratios aren't going to get the most from it either.