For Tow Dolly we have a term and definition in RV.

A short, two-wheel trailer coupled to the motorhome for transporting a car or other towed vehicle with two of the vehicle's wheels off the ground. The towed vehicle is driven up the dolly ramps so that two wheels rest on the dolly and the other two wheels arre on the ground. Tow dollies are not applicable for certain rear-wheel-drive vehicles.
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