Strange since that number was produced by my own math. I didn't take it from any published document. But if someone else independently came up with the exact same date I'd consider it validated. Heck, I even accounted for leap years in my calculations.

Yes, as I clearly stated, my assumed date does keep consumption at current rates. I took the highest estimate of yearly usage that I could find. At some point usage will decline as alternative fuels hit the market, as the price simply gets too high, and as supplies run short. So I would expect that consumption will continue to increase in the coming years, plateau, then decline.

I would assume you mean that OPEC is understating their reserves? So as to drive the price higher?