I also live in Austin. I moved downtown and got rid of my car 1.5 years ago. I bike everywhere, including work every day (3 miles) and I don't have the sweats and showers problem. Unless you bike to work in the middle of the afternoon, it's not going to be above 90F. Also, it's not a race, you can take a slower relaxing pace, kind of like fast walking. If that's still an issue it's like saying you can't go outside because you are going to sweat. Maybe there is something I just don't get, but I've never had the sweats or needed a shower. If every time some one has a drip of sweat they have to shower there would be showers in every restroom. I've gotten sweaty eating too much or too many spicy foods.