Have a look at this..
And here: http://www.terrafugia.com/aircraft.html
Goes 115mph in the air, and can travel at highway speeds on the road. Roughly 460 miles to the tank. O.o If you want it you can make a $10,000 reservation deposit.. they expect it'll cost $194,000 when it's out though. Man I want one lol. Comes with optional pilot-training. XD