Way behind? How do you figure that ? Most car amps are being designed for, hate to say it, 16 year old kids who don't give too cares about quality but to blow there friends out of the water with power. I can't think of any 50,000 dollar car amps either, but I could name a few dozen home amps. I will agree that incredible enclosures do help to make incredible sound in home audio. But pick up a stereophile magazine and go through some of the amps in there. They make the amps we use in our cars look like NOTHING. Check out the Halcro dm58 and find me any car amp at ANY price that can match that.
Oh yeah--I like chesse puffs.