In the winter there are no big events on the TT circuit so almost every weekend there's an trackday..
You pay 250 euro and may race a hole day on the track with youre own car..

Its lots of fun to see cars like Porsche 911 gt3 or tvr blitzing down the circuit.

Here's an little impression

More photo's on www.vwteampg.nl and then (in dutch) foto's diversen vijverbergtroffee TT circuit Assen 25 november

Have fun