speed leech 

When passing a person on the highway and they speed up to match your speed, staying with you until you brake of get ahead of them, at which point they slow back down to their original speed.

I had to cut a speed leech off 'cause they would not let me pass.

speed leech by Amarak July 21, 2009

speed leech 

A speed leech is a person who leeches speed off another driver when they pass. For example, one car is going a steady 50 mph and you pass him going 70 mph (because they are going too slow),..............and then "magically" they suddenly speed up to match your speed of 70 mph and keep up with you now , effectively leeching off your speed. This is done presumably because the speed leech figures if a police car is up ahead, the person in front will get the ticket. These people are cowardly people who are too wimpy to speed on their own and need to leech off another drivers speed

I am gonna lose this speed leech by going 100 mph, and see if they can keep up

speed leech by Picaboshouse August 2, 2016

speed leach

That driver who can't regulate their own speed so drives themselves up to the rear bumper of the car in front of them regardless of the speed until you pull over then they attach to the next car in line

This speed leach was following me through traffic for 20 miles 6 " off my bumper, then when I pulled over he pulled up on the bumper of the guy in front of me doing 30 mph!

speed leach by Mrfixit0623 May 12, 2016