Quick! Pick up some Valentine, Escort, and Beltronics stock while it's cheap!
That wouldn't do SHIT. Dropping the speed limit 21% will only extend driving times by 21% and extend the car's run time by 21%. Mathematically...it won't save much gas. But it will cost BILLIONS in time wasted. A better plan would be to shrink America by 21 percent. Everything's closer, less gas!
Sweet idea on the fat people laws. Every time I see an obese person in one of those damned motorized chairs, I want to throw them out of it.