If you assume that we all will continue to drive internal combustion engine vehicles (ICE) and only ICE cars, the time will be "soon". But that is not what is happening. We are going to electric forms of transportation.
If you take into consideration the alternatives such as EVs, bicycles, mass transits, we just might transition to a saner economy. In other words, I think we will see a dance between the costs of FF, costs of electricity, costs of EVs, costs of alternative forms of transportation and what consumers can afford. Here is some reference material and number crunches:
One-, two-, and three-hundred mile range EVs are scheduled to be produced before 2020 where the replacement packs are paid for by the difference in PV array electricity and the **replacement** cost of the oil used to make the gasoline (or diesel). For instance, if Bakken crude needs $80/barrel oil prices to continue drilling, that translates into approximately $4 a gallon gasoline. If a PV array can produce electricity for $0.10/kwhr, a 30 mile trip costs $1.00 in electricity. If a person drives 9,000 miles a year, that's 300 - 30 mile trips with a delta of $3.00 ($4-$1) or a $900 savings in "fuel". The replacement cost of a Leaf is $6,000. The break even point is $6000/$900/yr or 6.7 years; 1.3 years under the warranty of 8 years and 40K miles under the 100K warranty.
EV producers would be smart to focus on the replacement cost of gasoline instead of the refueling station cost.
This is sort of a "breakthrough" in the PV industry:
https://www.fraunhofer.de/en/press/rese ... cells.htmlhttp://www.financialsense.com/contribut ... solar-cella process that produces solar cells at lower temps and with less silicon. There is a press release saying the cells are 20% efficient which is what Musk's Solar City was mentioning the other day when he said his new cell were 30 to 40% more efficient than previous cells [assuming older PV cells with 15% efficient cells].
Here is a podcast on the future of the grid:
http://peakoil.com/consumption/limits-on-the-gridIt appears that the electrical utility industry can be stable with 80% renewables in the mix.
Toyota aims to nearly eliminate gasoline cars by 2050
http://phys.org/news/2015-10-toyota-aim ... -cars.htmlThe big automakers are signaling that we're now officially at the end of the ICE era and that the transition to a post-ICE world has begun.
When they killed the EVs back in the early 2000s (see the movie: "Who Killed the Electric Car" for a perspective on the situation) and started on the hydrogen fuel cell kick, I was really worried that they had lost their marbles. In retrospect, I think it was just a feign to let GM continue to sell more spark plugs, oil changes, and fan belts with hopes that a miracle would happen and they could eventually sell hydrogen like gasoline. Today, I think we all recognize the seriousness of our transportation fuels situation and sharp folks are looking and planning toward 2050 and beyond. We just aren't being cc'ed on their emails but every once in a while, they let us know what they are doing so.