As a Viner, I normally never review things that I actually buy out of my own pocket. But, I’m reviewing this one because it answers questions I had but could never find the answer to. Ok, the most important one. Will the exhaust from a 2021 Rav4 cause any boxes like cardboard, or plastic box, to get hot or catch on fire? And, the resounding answer is NO! We traveled 1130 miles one way to Canada with a LOT of stuff on the back. We had large plastic storage boxes, and cardboard boxes on top of that. We strapped them all down with bungee cords. And, nothing melted or caught on fire. We would periodically check out the boxes in the back at rest stops, and the boxes all felt cool / cold to the touch. I have a 11″ sandal / slide to measure the exhaust to the hitch one on of my pics. And, at that distance, everything was safe. On the drive back a few months later, though, we had just some cardboard boxes. We left all of our plastic storage bins up in Canada. And, one thing to not about this hitch is that in wet roads, whatever is in the back there WILL get wet on the under side. However, if you’re driving at speed in the rain. The top will not get, because of the drafting effect. Although, the sides of the boxes may get wet. So, if you can, use plastic boxes instead. All in all, this is a GREAT hitch carrier that extends your carrying space. We brought up so much junk with us to Canada, that we needed this hitch to carry everything with us. It’s LIGHT. It’s STURDY. It’s EASY to put together. And, the best thing is, it’s way better for your fuel economy than a roof cargo carrier. Those things absolutely kill your fuel economy by adding lots of drag. This hitch carrier with about 100 lbs loaded didn’t do anything to our fuel economy. It was the same as it every was. Absolutely, whole heartedly recommend it.