I've noticed less traffic in the San Fernando Valley area, both weekdays and weekends. In addition to the usual morning and evening rush hours, there used to be a lunch rush hour, too. The two days I was travelling through the valley at lunch time there were no slow-downs at all. Weekend traffic is noticably lighter.
As for speed, well, I like speed
, and if I'm paying $4.50+/gallon I'm going to enjoy it!
This reminds me - saw something on CNN a few nights ago called "hyper-mileage". Some guy with a basic Honda Accord was getting 50 mpg. He accomplished this by not idling, being ready to put the car in gear and go as soon as the car is started, coasting as much as possible, using the brakes as little as possible, fully inflating tires, using low viscosity oil, and even shutting the car OFF while at freeway speeds and coasting (called this "advanced" and advised the avg person not do it).
Obviously, you can't do all these things all the time, but general coasting, timing lights, proper tire inflation can save a few bucks.
At $4.50 per gallon, saving just 1 gallon per week is $234.00 in your pocket - sure is something to think about.