If you try snow, crusted hard snow is best, and cool the tracks before you drive in the snow so it won't melt onto the warm tracks and then re freeze locking stuff up. It may anyway, if so stop and thaw out the tracks. Silicone spray on the tracks will lessen the icing up problem.

Click the link below and scroll down to see movies of a Sherman, Leopard, Panther and Abrams driving outside.

Here is a slow mo movie in snow.