Usain Bolt toasts zero-gravity with champagne

Usain Bolt on Wednesday sprinted through thin air and sipped champagne floating on his back as he enjoyed near zero-gravity conditions in the back of an aircraft performing stomach-lurching parabola dives.

The eight-time Olympic champion grinned as he experienced weightlessness in a modified plane normally used for scientific research -- but on this occasion to showcase a champagne bottle that will allow astronauts to drink bubbles in space.