Kind of you to say it's interesting, it took me many years to finally realize the biggest flaw......as speed and resistance increase weight does not. also I'm not sure how reliable a wheel like that would be at high speed. The words the patent attorneys used sounded much better, but the patent office used a patent based on an air design to say I had nothing new and useful, (as I recall). PF has taught me the value of proper words and math that are a necessity in the presentation of ideas, but I'm afraid that I'm too old to make the changes needed, The brain seems less efficient every day lately. If the numbers I used are correct it's good up to around 10 mph on level ground, down grades or breaking allow the storage to some extent of regenerative power. I believe hydraulic systems offer some interesting options, especially when intertwining electric and steam systems.