Lately we've been smacked with another wave of flying car news, cars that can drive on the road and fly in the sky do grab headlines. But what about flying on water?

The Rinspeed Splash was a prototype car made in 2004 that can fly on water.  This prototype may be a few years old, but one look will tell you it's still ahead of the times. The Splash flies on water by utilizing a hydrofoil, which is something like an underwater wing. When the car/boat gets up to speed the wing lifts the vehicle out of the water. This technology is used in the world of racing boats but never has been applied to aquatic cars.

The Rinspeed is powered by compressed methane or natural gas (CNG). To use methane or biogas the gas must be collected, scrubbed, and compressed. Quite a simple process in comparison to refining crude oil. Let's go flying on biogas!

• CNG
• pickens plan
• methane
• rinspeed
• hydrofoil
• t boone pickens