Well, having worked in Oil & Gas, Mining and Power Generation all over the world for over 13 years now, I can tell you the world energy supply is VERY large and it basically boils down to the economics for the source.
Most sources just require a very large $/barrel or $/commodity price to be feasible. If Oil was around $75/barrel and Gas was around $6/cuft, they would have all the projects kicked off and North America would be working towards it's energy independance. Don't be too sad as the Oil & Gas companies are required for energy independance, as Green "Sustainable" sources just can not feed the full need for power in North America. These types of commodity prices are a given, thus just brace yourself. If anyone doesn't think the $150/barrel fiasco was not a test of whether America can pay it, it proved it can.
Will it run out? Eventually it will run out, but not in our lifetime or even our kids, kids lifetimes. There is just too much. Does that mean we should shy away from alternative sources or downplay the electric car aspec as an examplet? No, but the sooner people realize that there is no one solution, their is no Holy Grail of power, then maybe they will start to do an energy balance.
Trust me, in about 10 years, you will not see an Oil company or a Power company, or a Mining company. It will just be ENERGY companies and their taxes will be tied to an overall desired energy balance and polutant footprint. These companies will have Oil, Gas, Mining, Power Gen, Solar, Geo-Thermal, and Wind/Wave Technologies all in their portfolios.
I have to say that coal fired electric power is just as dirty as oil but because you can not see it in your backyard, people tolerate it. It is VERY political.
For those that just say no, think about what you are saying. Look at all the camera companies that thumbed their nose at digital cameras. Look at the companies that thumbed their noses at video tapes, cassette tapes, even cds or dvds now. Technology moves and you basically can accept it and approach it with an open mind or reject and ignore it and age poorly.
Will electric replace gas as the soruce of power for the masses? No! In fact, we would have a better chance of Natural Gas replacing Gasoline, but that is another story. In the end, electric cars are going to be a part of the road and that is just going to be that.
Oil, noise, etc. etc. all things aside, you can not take away the fact this electric Cobra is very fast and a pretty cool car. If they came up with a way to recharge it in 2 minutes, and with a range of 250 miles, would that be acceptable? Who knows? I love my combustible power and my Viper the way it is now, but let's not kid ourselves, an electric version is only a matter of time. I would embrace what they come our with, as long as it has style with a nod to heritage. If it looks like a bubble, burst it!