As a cart around the capitol building the usual restaurant pros/cons don't apply, but the food is better than any vegan restaurant food I've ever had, seriously. I tried the mystic mushroom and chili burger-3 alarm I think it was called-and while the chili burger was really good, I couldn't believe how good the mystic mushroom was. My only issue is that I'm a student and the portion sizes for a guy my size-6'0"/205 lbs-are not big enough that I could fill up on less than two burgers, which ran me $14 at $7 a burger. So for me I need larger portions to be able to eat there regularly, but as a vegan I try to support the food cart as much as possible. Highly recommended even if you can't eat there too often, but if you're a small eater there are no cons to speak of.
Cons: Portion Sizes