And this is a statement born out of ignorance of what peak oil actually is. It is maximal sustainable production.
Tar sands won't ever get you over a peak because the oil from tar sands is difficult to extract, so it won't be possible to extract as much oil from tar sands, as there was extracted from easy to claim oil wells at their peak. You won't be possibly able to extract as much oil from the difficult sources as you had extracted it from the easy ones.
Even if you get your oil off world, you certainly won't be able to get 80 millions of barrels a day from space. Even if one very distant day in the future the transport capacity would enable humankind this feat, the humankind would not need oil by then anymore.
Supply and demand function is not magical, as you imply. Sometimes there is just no more supply, no matter how high the demand is. And sometimes the supply costs have risen so high that it would be way cheaper to find an alternative solution. Thus in any of these cases oil production would not ever reach the erstwhile peak.