Thanks guys!
Sorry for the slow response.
1st: The pit building and grandstand and 1 control tower are made from foam sandwich poster board.
2d: Harbour Pointe Raceway is named after the neighbourhood in which we reside.
3d: It is not a copy of a real "roval", but it should be copied!
In regard to the switch tracks they are mechanical, modified.
Since I posted those pictures I've added about 1/2 metre to the oval and a metre+ to the road course, but the basic design is the same.
Here's a couple of "racing" pics:
Cjent1