ford is offering this in their new f150's now as well. thought it was a great idea. people will flock to it.
"understeer is when you hit the wall with the front of your car, oversteer is when you hit the wall with the rear of your car, horsepower is how hard your car hits the wall, and torque is how far your car moves the wall."
I'd be more impressed with the demo if they didn't have a driver steering the trailer! Really doesn't demonstrate the technology at all (if they even used it for the video). The video was really fully, but Volvo's video was more impressive. No special trailer rig needed: