This is a video on the installation of a Hollywood heavy duty, fat tire rack for my e-bike. I wanted something that would be able to carry one or two heavy bikes and would be movable between my motor home and tow car when we are traveling. This one I found meets all my needs, it's not cheap but seems very sturdy and will hold two bikes at least fifty pounds in weight.
This is a "Hollywood Rack Sportrider SE2, code HR14552-e. Got mine from etrailer.com but you can also find it on Amazon.