Pennsylvania Pacecar 

A tracter or large farm vehicle taking up the whole lane leaving no room to pass, commonly seen in Pennsylvania. This is most unappreciated when one is alredy running late to go somewhere.

I would've had time to stop for coffee before work this morning, but got stuck behind a damn Pennsylvania pacecar.

Pennsylvania Pacecar by kristen apple December 5, 2009

highway pacecar 

A state trooper or highway patrol car that nobody wants to pass in fear they may be pulled over. Therefore everyone stays behind him. Clogging up traffic.

A.Dude why are you doing 55mph?
B. Because there is a highway pacecar up ahead.

highway pacecar by Msandow94 October 19, 2013

pace car 

A police or highway patrol car driving on an interstate highway making it impossible for anyone to pass.

Dude, you're only going 55! I know, there's a pace car in front of me.

pace car by J-Rod123 May 11, 2006

PACE car 

An acronym standing for "Phone, Asian, Chick, Elderly," stereotypically considered the four worst categories of drivers (i.e., people talking on cell phones, people of Asian decent, women and old people). Similar to a pace car in NASCAR, the PACE car usually sets the pace for the flow of traffic by driving slowly or erratically in front of cars wishing to pass or drive faster. Once the PACE car gets out of the way, traffic will return to normal speeds and predictability. Often other drivers in the rear of the pack will guess which category the PACE car driver belongs to before seeing the driver when and if they are finally able to pass.

Be careful honey, it looks like there's a PACE car up ahead creating a bottleneck in the flow of traffic. At first I thought they were looking for an address or parking space but now I can see its just a PACE car. What kind of PACE car do you think it will turn out to be?

PACE car by C. Elliot Lee September 15, 2013

New Mexico Pace Car 

A New Mexico Pace Car is the act of sitting with your buttocks above your head (preferably on a wall at a 45° angle) and pooping onto the front of yourself. The goal of the New Mexico Pace Car is to outrun your excrement before it slides into your mouth using your penis as a shift knob.

Co-Worker 1: "Hey man, what'd you do this weekend?"

Co-Worker 2: "Well, I figured since it was the anniversary of my divorce I'd celebrate by giving myself a New Mexico Pace Car and watching re-runs of M.A.S.H."

New Mexico Pace Car by MygrantGlassCo June 19, 2015

Pace Car 

A non-alcoholic drink intended to slow you down from getting too drunk.

"Hey John, what are you drinking?"

"A pace car bro, that last jager bomb pushed me against the wall then told me to make it a sandwich, so I need to take a few laps to cool the engine"

Pace Car by banjoalltheway June 8, 2009

interstate pace car 

The police car. Usually a Chevy Impala or Crown Victoria marked or unmarked. Much like it's NASCAR counterpart when it appears Everyone instinctively slows down and drives in double single file lines and nobody dares to pass it.

Uh-Oh it's the interstate pace car everybody slow down.

interstate pace car by DennisIsEvil April 15, 2006