[Don Corleone]

Turning off the key doesn’t work?

[LouAvul]

Wouldn’t that lock the steering wheel? I don’t know. I’ve never tried it.

[TChris]

Turning off the key doesn’t work?

The Prius doesn't use an actual key. It's all electronic.

[Jim Noble]

Turning off the key doesn’t work?

Locks the steering and kills the brakes.

[N. Theknow]

Turning off the key doesn’t work?

Or shifting into neutral?

[Pelham]

It has a push button starter.

[Redleg Duke]

The Prius has a "Start" button that is activated by the presence of an RF fob in the car, and the brake peddal depressed. While running, pushing the button will shut off the power plant.

Why all these run-away cars? Panic and ignorance. Too many folks are just too damned dumb to be allowed to drive!

[AngelesCrestHighway]

Turning off the key doesn’t work? When all else fails....

[Arizona Carolyn]

You are smart enough to understand you turn off the key you lose braking and steering?????????? even the highway patrolman said he knew this was no joke since he could smell the guys brakes searing and the brake lights on and the car not slowing down.

[dangus]

Surprisingly, a lot of people don’t know how. It’s a button, not a key, and, if the car is in motion, you have to hold it in for several seconds. Plus, there’s an over-ride so you can’t shift gears into reverse or neutral while the car is accelerating. The car has been compared to the HAL-9000.

[dangus]

... in post #49, in fact.

[TheBattman]

I don’t think the Prius uses the key in the standard way. One of those electronic keys - just have it nearby, press the button on the dash and go... But pressing the button and holding is suppose to shut it off.