I'm impressed. I honestly couldn't stand being in that car for more than half an hour. It is too cramped and noisy. And just out of curiosity - did you pack at least one ice chest and/or a canoe?
As for 30mpg, I can see that at 60mph. Not sure anyone around here who drives that slow, but I can see it.
FWIW, I get about 22mpg in my "gas guzzler" Avalanche when keeping the speed down to around 70mph on long trips. This takes into account the requisite multi-thousand foot mountains one must cross to get out of Los Angeles to go pretty much anywhere on the 101, I-5, 14, or I-15.