So I saw the thread about the electric car. I have heard so much about electric car and hybrids, but not a steam engine car. Of course you might ask about a fuel source... but I think that we could use geothermal energy or this:
How would geothermal energy get into the car? I think it could be pumped into a house and then to the car. Of course the bmw sounds really good (probably better)
The only downside I see is the cost to create this, but of course I don't know anything (I'm a youngster). So if there are other cons please tell me.
http://www.greensteamengine.com/ (I only skimmed this website, so I don't know that much)
This is not my idea at all, and sorry if this is a repost.