When I called Las Vegas home, massive towers were going up, traffic was bad (especially on the Blue Diamond Highway), tourists were annoying and gas was cheap. Now, leaving Las Vegas, massive towers are going up, traffic is bad, tourists are annoying and gas is—once again—cheap. But it’s always worth saving a few gallons. After all, that $1 could win you the $1m payout at the Luxor’s giant slot machine. It’s thinking that makes both Sin City and the VW Jetta diesel so great.