Amidst the low growls and raspy roars of American muscle cars and the rat-tat-tat of antique engines, there was one distinctly British accent among the 68 locally owned exotic cars at the inaugural Festival of the Wheel on Sunday. Painted hood to bumper in the Union Jack flag, the 2002 XK8 Jaguar convertible — with an Austin Powers cardboard cutout behind the wheel — all but shouted “Yeah, baby!” to attendees milling about beneath the Sprint Pavilion tent at the fundraiser for the University of Virginia Cancer Center.