My wife and I have a commercial van we keep all our survival gear in. We live in the San Francisco Bay Area, and we expect a major earthquake followed by an even more major fire (as all the gas mains and water mains will be broken by the quake).

Jalopnik has a photo essay of some survival vehicles which are very impressive:

I'm not sure about getting fuel, though, after a quake wipes out all the electricity. And the mileage doesn't look too good on some of these bad boys.