Sad news, but hopefully someone will make a good mod of it so it's still alive in the virtual world.
Trying to think of other games with the track; I can only come up with Total Immersion Racing and ToCA Race Driver.
And apparently this, which I don't think came to much: http://igcd.net/game.php?id=1000008981
I'm not sure you can class Rockingham as historically important, certainly not in comparison to some other UK circuits.There should be some global laws against shutting down historically important race tracks
Coming from an American, I've never quite understood why oval racing is not very popular outside of North America. I mean yes, technically less skill is needed, but in exchange you get closer racing, more consistent paces, and you can actually see the car of your choice at almost any point on the racetrack.
I understand why road courses are so popular, but I can never figure out why people are obsessed with wanting to watch a car win a race by 30 seconds because somebody had a slightly better setup. In oval racing, that (usually) doesn't happen.
But then again, I'm an American, so maybe it's because I'm "too stupid to understand".