ELI5: Explain Like I'm 5

Bicycle carrier

A bicycle carrier is a device that you attach to your car so you can transport your bicycle with you when you go on a car ride. It fits onto the back of your car and has two arms that your bike rests on. You then use straps to tie your bike safely to the carrier so it can't move around while you're driving. Once you get to your destination you can then easily take the bike off the carrier and it's ready to ride!