Clark has talked before about personal flying machines. There are personal jets for sale already, and now personal helicopters are coming on the market, according to USA Today. There are only certain places where one can land a plane, but a helicopter can land almost anywhere. We are in the midst of a complete revolution in the transportation industry, and there are going to be a lot more affordable options for personal travel. People already travel by helicopter in Sao Paulo, Brazil, where traffic has gotten so out of control. It’s closer than you think.