Here's a fun bit of trivia: Jay Leno has driven his Chevrolet Volt nearly 11,000 miles and doesn't have a single gas station receipt to show for it. According to The New York Times Wheels blog, Leno has had his plug-in for 11 months and, as he told them, "I've never had to put gas in it yet... They gave it to me with a full tank of gas. I've used less than half of that."
Given that Leno has an entire fleet of gas-swilling rides in his garage, he can just take the Volt out whenever he knows he can get to Point B and back without refueling. You have to be kind of careful to put 11,000 miles on a Volt without ever going more than 40 miles (plus or minus) at a stretch. Luckily, Leno said his commute is less than 35 miles a day, and so he uses the Volt as his daily driver. He then makes a fairly good joke at the expense of General Motors, which you can read here.