I suggest selling the Corvette, buy an S-10 to carry the kayak, and a chevette to be cool on car pool day. Let's go Green!!!! LOL 
vettes actually get good milage, if you can keep your foot out of it. which is the hard part. hell even a town car gets like 25 mpg on the hwy, which is only a few mpg diffrence between a a v6 accord or v6 cameray. we all know the town car is a whole hell of a lot more car.
my work truck has 335k on it, the motor has never been out. other then a tranny and a starter, I have done basicly nothing too it. its just been belts, hoses, fluids and tires.