It's pretty much stop and go madness, 495 and 395 around here just cant handle the volume but there are also other options (bus, metro). The restaraunts where I live are a mix of both, my girlfriend says they suck (she's a "foodie"), but note that she likes to go out to expensive dinners (she made me go to Morimotos last time we were in Philly, that was about a $600 bill for the both of us). There's the typical Olive Garden, some random Mexican places, TGIF, but there's also some random "hole in the wall" places that are good...then when you get to the city the options are limitless, very cultural. Not to mention world renowned chefs.
Grim is right though, it gets pretty damn humid here in the Summer. There definitely are very distinguished seasons here. When it's Winter you'll know it's Winter and Summer is the same.