No one drives more than Texans do. Our cities are huge and sprawling, with downtown business centers located huge distances from where people live in suburbs or exurbs. My observation on Dallas is that no matter where you live or where you are going it always takes 45 minutes to an hour to get there, and the same is true for most of the state. Here in Texas we literally live in our cars. I keep a laptop in my pickup because it's easier to just sit in the truck and work for a few hours than to take the time to drive home to my office after having driven all the way into town. In fact, I'm parked at a McDonald's using their wireless internet right now.
With the time we spend in our vehicles we like to get large and comfortable ones, like SUVs or fancy pickups or large luxury cars. Even with the new, higher fuel economy standards, they tend to guzzle gas, and at current prices that can be pretty painful. Plus, when you're driving 2 to 3 hours a day, you start to feel guilty about all the pollutants your car is spewing out, no matter how warmly you feel about the Texas oil industry.
The answer to this is alternative fuels and higher fuel economy vehicles. Hybrid engines are the main answer to the fuel economy problem, but progress on hybrid trucks and SUVs has been painfully slow, and the selection remains limited to either very expensive foreign SUVs like the Toyota Highlander, cramped little SUVs like the Ford Escape or the idiotically designed line of GM hybrid pickups which get the same gas mileage as their non-hybrids.
None of these gets enough better gas mileage to justify the higher cost you pay for a hybrid over the life of the vehicle. To get decent return on your investment your hybrid really needs to be a compact or sub-compact car like the Prius, and no one wants to drive 3 hours a day scrunched up like a pretzel in one of those microscopic deathtraps.