My biggest complaint about this idea is that your individual mpg will come down to your own driving environment regardless of 4, 5, 6 or 8 cylinder engine. I've had 4 cyl, V6 and V8 vehicles as daily drivers and with my 10 minute commute with multiple traffic lights and never getting above 45 mph means they all got around 18-20 mpg. You're not going to get 35 mpg with a 4cyl in those driving conditions so it's a stupid idea. Compare my fuel usage to someone who has an hour + commute and that's where you find your wasted energy and increased pollution. Our gov't needs to take a little more time to think some of these things out before just "changing" everything because that's what they said they would do.
