Well, if he's saying that we need to get more serious about climate change, then I agree with that part. He does have a point about private planes and the celebrities who use them, and he says that other people would use them if they could afford to. Although a lot of people can't even afford to fly commercial.
Strictly speaking, if Back to the Future or The Jetsons are anything to go by, we should all have had flying cars by now. On the other hand, Soylent Green and The Omega Man foretold of a much darker future, which seems to be the direction we're taking at present.