Mike,
Have you guys tried running those cars on snow and ice in the winter?
I guess studding the tires would be needed but I bet that would be fun.
Here is what some nuts do up here in February downtown.
The Fur Rondy Grand Prix.
They do this down by our main office.
It doesn't look like it, but they really mess up the roads for this event.
It is an event to get to the office that Thursday and Friday before the race.
http://blog.hemmings.com/index.php/2009/03/11/fur-rondy-grand-prix-downtown-alaska-street-racing/