For example, can I drive on the road with rubber tracks?
If it's one of the brutes, even in a deactivated state, you run the risk of liability for overweight vehicle damage, despite rubber tracks, and the potential for civil lawsuits from municipalities and utility companies for possible damage to sewage infrastructure and underground utilities. You could approach the enthusiasts who run these things in open fields and ask them what legal issues they have to contend with - they would probably know more about this than lawyers would. Good luck
Tim Akpinar