Idaho vehicle registration is dirt cheap compared to California. I don't have to screw with smog checks in Pocatello either. My auto insurance is a lot less expensive than it was in San Diego too. Gasoline is cheaper too. Now that I'm telecommuting 100%, my Saturn SL2 is accruing almost 1000 miles EACH YEAR. I was accruing that much EACH MONTH on my commute to work in San Diego. I did have to buy a battery charger to keep the battery topped up.
It's a real treat to make my QUARTERLY trip to the gas station.