So this is more of an engineering type question, and might be 'duh' to some people, but I don't know the answer--- but i've been thinking about it since I was annihilated by a 2012 Camry that was stock, didn't realize they put out as much power as they do, and out of a 3.5L engine. Camry is a big fat car, how/why is that engine making so much more power, and getting the same if not better gas mileage. Ok technology is newer, I get it. What's the restrictions in our engine build that keeps it under-performing? Is there a way to overcome it? I'm assuming no--but why?