Today the personal vehicle, tomorrow the planes, trains and submarines. I am so ready to buy one of those French compressed air cars right now! It would somehow feel so liberating. You're right about the larger commercial modes of transportation, planes probably presenting the largest hurdle. But we're operating with 19th century technology right now, and we need to move on. And it doesn't have to be the same answer for each one. Heavy rail could possibly use magnetic power. Large construction equipment, maybe the reactor answer. Solutions are out there, but we've been too lazy and complacent to develop them. I'm actually excited to think this just might precipitate change! Internal combustion is sooo last century! Hey, it might even change world politics if every country could easily produce the energy they need.