Yes, they create their own wind downwind with a propeller (+ wheels and ground resistance) where a sailboat creates her own wind with her speed and water resist

Yes, they create their own wind downwind with a propeller (+ wheels and ground resistance) where a sailboat creates her own wind with her speed and water resistance / aerodynamics (instead of mechanics) but it's the same principle underneath: use your own speed to create your own wind (that will push you).