A car in the left lane which is going up to 5 MPH over the posted speed limit on the highway, and has probably started to rack up a car line. Often driven by the elderly, a person on a cell phone, or a soccer mom, floats will rarely switch to the other lane to let traffic pass.
Is picking your opp up in an aggressive way and tossing him or her down highway 27. It's an act out of anger. It's an action you take when you are offended by another person.