Coercive Tailgating

…the act of  tailgating the last car in a row of cars all following a slower-moving driver, in efforts to coerce that car into tailgating the other cars, and eventually coercing the lead car to speed up a little bit.  Sort of a grass-roots rallying effort: “C’mon, guys, we can do this if we all work together!” 

(Differs from those times when that car in front of us just can’t read speed limit signs, and from that impatient jackass that is trying to get past you on the freeway).