When towing in the back of a motorhome, use a protective bra or deflector to defend the towed motor vehicle’s windshield from highway debris.

https://wiki-canyon.win/index.php/Windshield_Repair_Quote_for_Leaks_and_Seals:_Cost_Factors

When towing in the back of a motorhome, use a defensive bra or deflector to protect the towed car’s windshield from road particles.