actually Oil will never run out.

because at some point when it becomes prohibitively expensive
to extract, other technologies will come on the market - what those
other technologies are is not easy to predict, but probably fuel cells using hydrogen,

other options are hybrid cars (mix of electric, and gas powered)which
are being sold now, and consume maybe half the gasoline of regular cards.
plus a host of other options, eg. ethanol, or blends, (heck you can turn just about plant into alcohol, even garbage)

even cheaper, more efficient solar panels, Imagine making roofing shingles out of that and converting the extra energy into hydrogen which can be stored for future use. etc.

the fact is as far as energy is concerned the amount of solar energy that hits the earth something like 20% is reflected, a large part goes into warming the soil, and a large part goes into water evaporation - but the amount that sustains all life on earth is negligible, less than 1%. (and oil is solar energy from the past)