Steam is great, Larry - except for the increased risk of being burned!!
Actually, I think the Hybird auto (recharge your own battery)will be the technology of the future for autos. It has been mentioned before, but if you have an ALL ELECTRIC auto (with Battery), the thing STILL needs to be charged somewhere, and when it is charged, a power plant (likely burning coal) somewhere will supply the power. That power plant will probably polute more than the cars it would take off the road, and BTW, our electrical grid system is already overtaxed to the breaking point in some places now. People forget that this is a "pay me now or pay me later" situation - energy is not free, any way one looks at it!
Harry