Here is my concept of a free Elio. The least amount of miles I drive a week is 400. Multiply that by 52 weeks. That's 20,800 miles per year. Divide that number by the MPG of your present vehicle, for example 30 MPH. Now take that yearly number an divide by 84 MPH.
693 gallons per year on a 30 mph vehicle
247 gallons per year on an 84 mph Elio
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446 gallons per year on saved gas X $3.30 per gallon (average)= $1471 savings per year.
$6800 Elio cost divided by the average savings per year equals 4.6 years payoff of Elio without spending any more money for gas than I presently use. So every 4.6 years I get a new Elio without spending any more money.
Pretty sweet deal in my book.