For me, the gas mileage aspect is a big reason why, but the biggest reason I'm getting one is to be able to use the HOV lanes anytime, without having to be fully exposed to the elements and the dangers of riding a 2 wheeled motorcycle. While the Elio most likely will not offer the same protection as a big car, it is much better than riding a motorcycle with nothing protecting you except a helmet. If gas goes to 1.00/gallon, I'll still buy an Elio. No matter what the price of gas is, it is always better to use 1/3 the fuel, and you'll always be saving money not only from the gas savings, but the lower insurance cost and the lower cost of maintenance. Replacing 3 tires instead of 4, and 3 wheel brake jobs will always be cheaper than on a 4 wheeler. Not to mention the savings on the initial purchase price.