I love this town. It got even cooler after I stopped driving.
Car2Go is here. There are lots of people here with cars, maybe you can befriend a few of them. There are rent a car places if you want to drive to Dallas or Houston, although I have no idea why you would. There's cabs, pedicabs, horse drawn carriages. Busses, and a baby step of a train.
Yeah, it gets hot here. I guess other people bike in the a/c or something, I just go out and sweat. Whatever. Everyone sweats in the summer here.