Kate Middleton and Prince William beamed as they left the royal wedding brunch reception in an Aston Martin. Will was behind the wheel of the car, which was decorated with balloons, a big red ribbon, and a license plate that read "JU5T WED." Kate, still wearing her Alexander McQueen wedding gown, waved to the gathered crowds as they rolled by. The newlyweds' decision to drive themselves was a modern one, as was the car, which Prince Charles had converted to run on eco-friendly, bio-ethanol fuel! The pair's festivities aren't yet over, though. They'll be on hand this evening for a private party hosted by William's father.