Oil shale won't happen. Grinding up a large swath of Colorado and Utah and leaving a pile of fine sand to blow around--trying that explaning that one to the Wednesday night Sierra Club meeting.
I believe they are now working with technology to extract the oil from the shale in-situ without digging or grinding. It involves pumping very hot water down the whole and essentially melting it out.
Synthetic oil from coal (done by Germany before WW2)
Bio-fuels