You must know something secret about California that I don't. Last time I drove there, speed limit was 65 on highway 99, so your whole argument has no premise.15mph over 700 miles is 3.5 hours longer. Let's say 42mpg at 75mph vs. 50mpg at 55mph. $4.50/gallon. $12 savings at a cost of 3.5h. No thank you!