PHOTO: His Royal Highness On An Electric Bicycle

THE Prince of wheels scattered crowds as he careered around his back garden on an electric bike. Charles, 62, saddled up for a surprise trip on the green machine after inspecting a series of eco vehicles � including a car fuelled by cheese � at his London home yesterday. After abruptly setting off, the Prince was heard to say "which button do I push?" as the bike accelerated over a gravel path and bumped up a grass verge. Grinning with delight, the heir to the throne finally wrestled control of the bike to the applause of dozens of invited guests.The �1,895 Spencer Ivy bike is one of the vehicles on display at the Prince's Start festival which begins on Sunday and shows how people can live more sustainably.