[Bob Lincoln]

Did it stay engaged even after turning OFF the cruise control switch? There are a few ways to disable cruise - step on brake, hit the cancel button, turn the switch to OFF, or, if unable to stop any other way, put it in neutral, stop and shut car off, then start it again.

How did your friend finally stop the car if the cruise would not disengage?

 

[browens1534]

I'm gonna throw this out there. Most cases of UA are pedal misapplication or driver inexperience. Like the lady in the Sorento, that was pure ignorance.