Small enough to get around the beltway nasty traffic yet, big enough to allow you to see what's up ahead. The tech package is cool if your company allows you to synch your blackberry with your car - mine doesn't - ostensibly for security reasons. Even if the company doesn't, it's worth it to get your own phone and just ignore theirs when it rings. She drives like a dream and looks very stylish. The only thing I don't like about her is really crappy gas mileage. Even when I am on the highway I get no more than 21 or 22 MPG.
Zoned air conditioning, big GPS screen with lots of options like different routes to my object location.
A hybrid version that gets 75 miles per gallon and still uses turbo to get the whiplash (dollar game) effect.