A good friend of mine and I were discussing cars over the phone the other night. We are both car nuts and he is a bit more in tune with the manufacturers and laws than I am. I am more into the technical side of things. He asked me a question that I had often thought about also. His 1994 200SX got in the mid 30's for mpg. My 1990 Civic got in the high 30's to low 40's mpg. Today you would have to be hard pressed to find cars that do that.
I formulated that there were two reasons that mpg's are lower today than they were in the 90's.
1) Today's Heavier cars for safety and comfort.
2) Reduced emissions now compared to then.
#2 is a bit counter intuitive. In order to really get very clean burns, you need the right amount of fuel. I think, in the 90's they just ran them lean and emmisions were higher and mpg higher, as a result.
So, if I am correct, if slightly higher emmisions can be tolerated, higher mpg's can be had with the internal combustion, gasoline burning engine. No?
If most cars could get 35mpg avg, we would cut down alot on our fuel consumption without needing to force feed undeveloped technology into the market. Don't get me wrong, I am all for looking for new ways to speed around but let's not discard what we already know that works.