Not to also disrespect the victims of this, but what about simply slamming on the brakes?
I encountered this situation in an old Rav4 before. I test drove an old Rav4, and after accelerating really hard, I noticed that (no floor mats or anything!) the gas pedal was literally stuck!

Now I didn't think of just driving in neutral (it was an AT), but the first thing that came to my common sense mind was to slam on the brakes to at LEAST slow it down. I practically drove on the brakes for a mile until I was able to stop in a parking lot where after I killed the engine switch, I could see my brakes all smoking

That whole time I was just slowing the car down by slamming on the brakes, and at times pulling the hand brake.
That accident could have been prevented if you simply just slam on the brakes even if the gas is stuck. SW is also right, it should have hit the redline and killed the engine anyways.. Or in the very worse, put the car in PARK and just drop that whole transmission... Better to wreck the transmission rather than get killed in an accident