This looks an awful lot like a troll, but against my better judgment, I'll bite:
Power doesn't have to mean lousy fuel economy all the time.
I don't mean to offend, but getting single digit MPG points to driving technique more than equipment.
Even a 505 hp Corvette Z06 is
capable of returning decent fuel economy (for a 505 hp vehicle... it's all relative of course)
...if the driver actually wants to get it.
See these two threads:
http://ecomodder.com/forum/showthrea...05-a-9841.html
http://ecomodder.com/forum/showthrea...thon-5508.html