This is probably one of the scarriest experiences I've ever had, next to almost bleeding to death (long story and not appropriate for this site). But first a little background info:
My (then) fiance's car had been stolen and the insurance company hadn't gotten back to him with approval for a rental car yet, and he needed to have a vehicle for class and work the next day. Luckily his father had his 1972 GMC Sprint* sitting around and agreed to loan it to him until the rental came through.
*A Sprint is basically an El Camino with the front end of a Chevelle.
So we hitch a ride over to their place, 45 minutes away, pick up the car, and head back. It is dark, and 99% of our trip is Interstate, so no big issue there. about 20 minutes into our trip, I hear a roar behind us, and Fiance backs off the accelerator. I turn around (there is no passenger side mirror on a Sprint) to see a large, black semi chewing on our ass, with his brights on. Once Fiance slowed down, he backed off- WAY off, almost 1/4 mile.
Not 10 minutes later, I hear the same roar and Fiance punches it, keep in mind this car/truck had a chevy big-block 350 sitting pretty under the hood on a 1,200lb chassis, so when he floored it- it WENT. So I'm sitting in the passenger's seat going
"WTF!!!" and Fiance's got his eyes glued to the rear-view.
Fiance: That truck gunned it to get on our ass again, and he won't get around. (he speeds up some more) He's keeping right on us!
Now, during all this, Fiance was keeping the speed "reasonable". Once the psychopath behind us started swerving and accelerating like he was going to PIT us off the road- we basically said "F*CK THIS!" and he floored it (I didn't check the speedo, but I'm pretty sure we were up to a buck 25) and got up AWAY from psycho-trucker, and got off at the next exit. I was shaking uncontrolably, and Fiance was alternately pissed and terrified. We reported the incident to the State Trooper that was stopped at the gas station we stopped at, but since we never got a licence number, all we could describe was "a black semi" which isn't too helpful.
As far as I know, we did NOTHING to provoke this, they just went after us because they felt like it. I've never been so happy to have been in a high-performance car/truck thing in my life.
Normally most truck drivers on the road are awesome, with a few exceptions. This was absolutely terrifying, and if someone was f*ucking with us for fun- it wasn't funny, we were honestly afraid for our lives. Anybody else have this kind of thing happen to them/someone they know? I'm curious if this is an isolated incident.