Have you ever dreamed to have a car like Flinstones? If you answered yes, there is an option for you. Even this kind of vehicles was developed in the past, this one is a street legal car. It can drive 30 miles per hour up a hill. The car will be selling for a $15,000.
The car is powered by a series of back and forth cranks operated by the passengers, up to four people can join in. So the bigger the family the better a speed. Charles Greenwood P.E. came up with the idea for the HumanCar while sitting at a standstill in traffic smog in the Silicon Valley in 1968. So if you want to make yourself and your family fit, this a good option.
Image Credit: humancar.com