How would you like a car...

...that runs on compressed air instead of fossil fuels? The Air Car, above, is expected to cost around $8,000. It would have a top speed of 60 mph and a range of about 185 miles between refuels. Because there's no combustion engine, changing the one liter of vegetable oil would only be necessary every 30,000 miles. And due to its simplicity, there would be very little maintenance required.