Wow. My first entry ever has won! I’m now delighted to have an excuse to not revise by setting you chaps a fresh challenge. This thread’s been running for an awfully long time, so please, if this one has been done before, somebody correct me and I’ll think up a new idea.
Modify the short and rural Dijon-Prenois circuit (scene of Villeneuve and Arnoux’s famous 1979 battle) to be used for modern Formula One and Moto GP events. Try to minimise forest destruction, and maintain the smooth, flowing nature of the original circuit.
I’ll pick the winner in a few days :D