Do I have to insure my car if it is not driveable?

My car is broken down and I don't plan on getting it fixed. The tags and insurance are up to date, but I'd like to cancel everything since I won't be driving the car anymore.

Technically, you only have to insure the vehicle if it is being driven, but the state could suspend your vehicle's registration for not maintaining insurance so you'll likely have to turn in your tags. You should contact your state's  vehicle registration office for more information on the tags.