We can't stop using fossil fuels. It is estimated it would take the US, with all its scientific and raw material capacity, over 50 years just to convert to electric automobiles, let alone other power needs. And you'll have to consider that if we stop our purchasing of fuels from the different countries we use, they will go broke and be unable to feed themselves. The US is the largest importer and exporter of petroleum products in the world. And we export to support other countries economies along with generating trade for other countries down the road. Our largest suppliers in order backwards of amounts are Venezuela, Mexico, and Canada (#1). The infamous Alaskan oil pipeline comes to a screeching halt at Valdez and a vast majority of the oil is sold to Japan for them to refine and sell it back to us for a profit. Without this. their economy would topple. There is more than just the politics of the oil that has been "sold" to the public since the late 90's. This is what the political machine has fed you. In reality, it is just the business of keeping people fed to stop possible wars from breaking out when the neighbors come looking for food. LAZLO! red
Between 15 and 20 years after the portable electric source is field tested, assuming no show-stoppers; and, after we get to a presidential re-election campaign down the road.