I'm looking forward to the 35mpg rule. Cars and other vehicles that litter the road (SUVs, pickups) are huge and overweight. I love performance cars, but I am of the school of thought that that includes efficiency, and I can't stand the gas guzzlers on the road today. Anybody can make a car fast by building a big engine and dumping a lot of fuel into it -- even Detroit!
These days, 3500 lbs is considered "light" for a car.
We got better economy in the 1980s than we do today.
Americans keep getting bigger and heavier, and so do our cars. They keep bumping up the size and weight of cars in the name of comfort and safety. Many car manufacturers' idea of making the structure of a car safer is to add more metal to it. I'd like to see them make a stronger structure without
Imagine if we had the engine technology of today in cars that weighed 2200-3200 lbs. like they did in the 80s.
And aerodynamics has taken a back seat to styling and "keeping up with the SUV height". In the 80s, car manufacturers boasted of drag coefficients in the range of .29 (1984 Trans Am) to .32 (several cars). Notice they don't talk about it anymore? I know that flush fitting door handles, wipers, panel gaps, and overall smooth lines are a tremendous help, but I don't believe many of the brick boxes on the road today are very efficient against the wind.
35mpg? Bring it on! I can't drive my 4-cylinder, 30mpg 1985.5 Porsche 944 forever!