The TT Circuit Assen is a new one for me. Known primarily as a motorcycle track, one is met by a large sign on the way to the paddock declaring Assen to the be Cathedral of Speed. It is a warranted designation. On a motorbike at full pelt, I can imagine that this is might be something of a daunting venue, but for DTM and its catalogue of high downforce, high speed – in comparison to Moto GP – tanks, the circuit is somewhat less daunting, but still challenging.