They also have the Porshe experience there, but I believe the track was built with motorcycle racing as the goal.
The museum is massive with one section dedicated to old F1 cars, but the rest is stuffed literally to the rafters with every bike you can imagine.
http://www.triumphrat.net/memberalbu...ry.php/cat/567
http://www.triumphrat.net/memberalbu...500/ppuser/370
some more pics.