Just about everything we use around the home and office runs on electicity. Electric cars and trains are available today but right now, most of our electricity is generated by burning oil. What we need is another way to generate the electicity. Nukes, Wind, Solar, Water, Geothermic, etc. are available today, but as Wouter points out, until the price of oil gets very painful, or our governments mandate it, we won't see much money spent on developement of those sources.
That won't solve the problems of producing all the plastic items made from petroleum (like our Boats!) with -no- petroleum, but it's a start. How much petrol does it take to produce Carbon Fiber? <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />