What do I need to know - smart car- toy hauler

You need to be careful in your selection of toy haulers. Be fully aware of what the carrying capacity of the ENTIRE toy hauler is, not just the garage area. You will find that for some toy haulers if you put your smart car in the garage that you literally can't put anything else in the entire toy hauler because you have met the entire carrying capacity of the toy hauler by having your car in it.