We have that exact cover for our bikes. It works great with our full size pick up, but we do use bungee cords to keep it from flapping. However, with our mid-size SUV (Buick Enclave), I would think with cars as well, it pretty much blocks your rear vision. If you come up with a way to take bikes on a long vacation and protect them from the elements, please share.
P2
2018 Trek Silque SLR6 - Selle SMP Glider
2018 Specialized Dolce EVO Comp - Selle SMP Glider
2011 Trek Madone 5.2 WSD -Selle SMP Glider
2013 Giant TCX W - Oura 143