I have seen bikers who just tie their bikes at the top of their cars or back of their cars. I know this can be dangerous to other drivers in the road. I wish that all bikers will have a kuat bike rack or some sort of bike rack where they can put their bikes securely.
Why I suggested kuat bike rack? It is because it includes a hitch lock and a cable lock, and it's super easy to install with its hand tightening cam system. You can also choose either black chrome or white rack depending on what looks best with your car. Most of all, Kuat products comes with a lifetime warranty so you will never worry about your bike rack.