What kind of car was she driving?
My Suzuki XL7 had the accelerator stick on the freeway at 110.
The apprentice that had fitted the cruise control allowed the new cable to obstruct the throttle cable, so at freeway speed the throttle body remained jammed 2/3 open.
I'm glad it was me driving and not my wife.
Lots of noise popping it in neutral and stopping the car as the engine tried to rev it's rings off before I could shut it off safely.