I live in Houston too, there are chargers at HEB, several Cracker Barrels, dotted along all the major fwys in town ect. In the event of needing a charger, the car will tell where the closest charging station is, how many cars are there and at what rate of charge you can get at the station. I know of several Tesla owners and most of them charge at home, for the stuff they have to do around town, most of them almost never use the Tesla charging network. People need to get rid of the notion of having to go to the gas station. You charge at home. People driving more then 300 miles a day is actually quite rare for the normal person. When I was working at the dealership, I got to demo a Volt hybrid and going to work and back, around 25 miles each way, I could make it on all electric power.