keep in mind that the auto industry can buck back with things...if the mustang exists, the challenger will exist...so long as chrysler doesnt screw it up..fuel concerns arent going to run off the mustang or the corvette, as they are american icons...so that cant be the excuse for the challengers demise, should it happen.
amandas grandfather has a 300C, and on a trip to texas, he got like 30mpg...a guy from MF has a new Z06, and on long highway stretches of conservative driving, he gets around 30mpg, although he gets like 6 around town...
