Penn House Gravity Grand Prix, Buckinghamshire
Penn House Grand Prix is a gravity powered time-trial for karts, sidecars and bikes
The course is a kilometre of perfectly smooth private driveway that snakes through a private woodland in Penn Street, Buckinghamshire.
Earl and Countess Howe kindly allowed this event to take place at Penn House, their family home.
Full details and entry forms at http://www.pennhousegrandprix.co.uk/