Using tax incentives to encourage people to stop driving heavy vehicles for non-commercial uses and to buy more environmentally friendly vehicles might be a good start. And I think that keeping the price of gasoline high enough to keep poeple mindful of how much they are using would help as well.

There are many people here in the US who would gladly buy vehicles using the new technologies if they were readily available. I think this is the new growth sector in the market. When automobile makers finally figure this out, they'll be more vigorous in helping to get these products out there. This isn't going to take a big effort. It's only going to take a few important people waking up to the potential to make some good money from this new market.

Money can drive change for the good just as well as it can drive destructive change. It just takes a few people with good imaginations and a bit of pluck.