As a side note here; we have sufficient petroleum, tar sands, etc. to last for awhile; maybe a couple of hundred years. Assuming that crude oil is finite, and not continually generated, it will some day be exhausted. At some point, we will be forced to find alternate and renewable sources of energy, or shiver in the Winter, cook our food with a solar oven or eat it raw. It is well and good that we are experimenting with solar, wind and ocean currents, in the knowledge that we can improve on these nascent industries and one day make them viable.
Petroleum will need to be saved for petrochemicals; i.e. plastics, drugs, etc. until we can find other means of producing the myriad of products we enjoy from petroleum. In the meantime, let's not destroy our economy and our country over a bs environmental "religion" that is rushing us into self destruction. Nuclear energy any one?