Mr Sharif said Pakistan would extend its "full support" over the withdrawal to "see that everything goes well and smoothly".

BBC: Pakistan election: Sharif poised to take over as PM

But even assuming everything goes well for Mr Bush, several things will make this nigh-impossible.

ECONOMIST: Holding the line? | The

"When everything goes well, the star will take the credit for it, " he says.

FORBES: Magazine Article

If everything goes well, they say, they could begin rolling out the system next year, starting in Houston.

FORBES: Magazine Article