I also thought it was more (I remember reading about 30% in the early 2000's), so I was kinda surprised. I think you are right that miles traveled will be higher, so from an emissions perspective the decrease in commuting is good news. From the perspective of cars being everywhere and making environments unpleasant, as long as people don't think twice about hoping in the car to go Starbucks twice a day, we've got a huge problem.