^^Read the rest of this post before reading mine.
1. How is reducing gas consumption (more MPG=less total consumption) going to increase the market for oil? That doesn't make any sense.
2. Respiration, decomposition, and evaporation are much more environmentally friendly than drilling for oil. The rest of this statement I agree with.
3. But this statement makes you're previous one pointless. Infrastructure is needed to operate the rigs, look at alaska's north slope. Some of those areas, like Prudhoe Bay, encompass enormous amounts of land with roads between rigs, housing, and pipelines. Sure the rigs don't have an enormous impact, but the rest of drilling process does. And although the oil companies claim they can do it better, they never do (read this month's National geographic.)
4 and 5. You could very easily be right here, I have no idea. Do you mean we will never be able to access it, or are we working on the technologies to access it right now? Even so, at some point, barring colonizations of other planets and an armeggedon, we will at some point run out of oil.
In closing, environmental degredation is the first step in societal poverty (look at Africa) and in my opinion, oil could be America's achilles heel.