It's a basic track in terms of environment - shouldn't be too hard for them to include it. I'd definitely thrash around it if it was included, but I'm more interested in the Top Gear Test Track. They have to get that included, and totally nailed to perfection. If they do not include an entire game mode centered around that track, they will have seriously missed a trick!
For all of the cars that are in the game that The Stig has driven around the track, each one should have a real-time ghost replay of The Stig's time so we can all race against it and produce our own "Top Gear Test Track Leaderboard"