Need a new daily driver / sleeper

[Misfit]

I'm thinking of getting a car for my daily commute. But, it has to get decent mileage (25+ on the highway) and be fast (faster than the Titan) and less than $15k (used).

First thing that comes to mind is an early model C5 vette. They're fast and can get 30mpg on the highway. But, I want something that doesn't attract attention. That kinda rules out typical muscle cars. I could go with a C4 vette, but I really hate the body style.

Then I was thinking of the Buick GN cars. However, reliability and getting parts can be a problem.

So what else is out there? I don't like 4 bangers, even if they are fast. Nor do I care for manual transmissions.

Maybe I'm just too damn picky.