I thought the same but I would also pull the key out to stop the car. Im glad I dont have a Toyota.
I'd just leave it running. Most cars built in the last 20 or so years are equipped with rev limiters, so you don't have to worry about blowing the engine if you leave it running with the throttle wide open. Also, with the engine running, you still have your power steering and brakes.
Someone else mentioned the steering locking if you turn off the ignition and remove the key. This will happen if you remove the key from the switch, but not if you turn off the ignition and leave the key in.
Also, no one NEEDS power steering or brakes, you just have to remember that you'll need more effort to steer and brake.
We had to do all these things in Driver's Ed; don't they teach that anymore?
Thank you - good advice.