A tow dolly is a type of trailer designed to transport a vehicle behind another vehicle, typically a motorhome or truck. It supports the front wheels of the towed vehicle while allowing the rear wheels to remain on the ground. This setup is useful for towing cars, especially those that are not all-wheel drive, as it prevents damage to the drivetrain. Tow dollies are equipped with ramps for easy loading and unloading, and they often feature adjustable wheel straps to secure the towed vehicle. They are a popular choice for those who want to travel with a second vehicle without the need for a full car trailer.