At 1:20, Jay Leno states that he has a Volt and that he has driven it 18,000 miles and used only 12 gallons of gas.
He purchased the car in early 2011. This video was published in July, 2012.
To put 18,000 miles on a Volt, in 18 months, and only use 12 gallons of gas, you are driving short trips. Like to work and back. That is called a DAILY DRIVER.