If you have a tow hitch, factory or otherwise, Thule make a range of these bike racks that clamp onto the tow ball. I use one all the time. Takes up to three bikes and has integrated tail lights. Looks just like the one in your picture, but clamps onto the tow hitch. Takes only a minute or two to put on, just tighten one bolt and its securely attached. Thule also make roof racks for the bike as well.
Towbar mounted - Thule Web