Your right about showing our cars. As far as a route with twisties, I thought you already had a plan according to your post in the Murphy's thread:
Ater we eat, we can drive some of the twisties in the area, and some (see crossfireconv08's posts) are spending the night in La Grange for more driving and fellowship the next day.

I'm not aware of any in the area, the map of roads there looks fairly straight. That is what got me wondering that you knew something about the area.
Looking at the map of the area, Buescher State Park is about 12 miles away and looks to have twisties and runs into Bastrop Park. If there is no plan to do twisties, I guess you'll have to come up with the route as we can't just wonder around not knowing where we are going. It is your GTG, so it is your call.