Well, I think he is right. Have you ever seen how many people each car have in on cities?. I made the statistic counting traffic samples with friends(thousand

Well, I think he is right. Have you ever seen how many people each car have in on cities?. I made the statistic counting traffic samples with friends(thousands of car samples)in Madrid, Spain. Over 95%cars had only one person per car. That means moving +1500kg for really moving 75kg. 75/1575= 5% efficiency. We are wasting so much energy, nobody cares because oil is dirty cheap. This will change as oil prices(energy prices) go up. A super kart could do the same thing cars do on cities moving 75kg of kart, that means 75/150 > 10 times better efficiency. It could use much less road space too(and parking). But some changes are needed to make this practical(individual karts for each person or luggage(autonomous car) if needed). The classical segway is just nerd and impractical(nobody likes it), but I really love the Segway centaur: http://www.youtube.com/watch?v=H5ntCYYc7lw http://www.youtube.com/watch?v=H5ntCYYc7lw