This usually happens by accident by getting out of your speeding car and having it push you along, since in most cases you cannot you're awesome with your car. Even though it is in most cases an accident, it is fully reproducible by just positioning your car so that it pushes you a long distance. This bug was introduced somewhere in 2015. When it's happening to you, on your screen it looks fine, but to other players you're skipping all over the place.   I reported this way