Good question. And what will Al Gore use to power his private jet? Methinks Gore is delusional--iif he really believes his own

absurd words. Moreover, how will the global economy all of a sudden change over to some as yet undisclosed energy source

without completely collapsing?

For the ten year time-line Gore is talking about electricity generation, not transportation. For electricity generation, we already have solar, wind and some water/damning. The technology already exists, and, frankly, the push would create new jobs in the economy.