Not until "oil crises" is more than a dire prediction will the solution be chased with any enthusiasm. We've got years of oil under Alaska, off shore, Russia etc. It's not really a problem that exists at this time.
None of us will be alive when the solution is achieved. No of us will likely be alive when a shortage truly exists. Meanwhile. some serious "men in sheds", oil companies and scientists will dabble with possible solutions. The press will hop on the "solution of the day" and nothing will really change. Well, more will join the panicked few of today causing all sorts of knee jerk reactions and solutions, all of which will be costly, mostly ineffective and impractical.