If you've never heard of it, the Goodwood Festival of Speed is a motorsports free-for-all held annually in England. Basically, they bring together many very rare race cars, sports cars, super cars, bikes, rally cars...you name it, they race it up the hill on the Goodwood Estate.
Here is a large 90 picture photo gallery of this year's great event:
Goodwood Festival of Speed Results and Photo Gallery
Several Porsches made runs up the hill, including a pair of Gulf Oil 917s.