BTW loans at below market interest rates are a subsidy. Calling them loans is just doublespeak.
And turning off the key stops any car. The people who died when the car got to 100 miles per hour would probably also have died in the midst of nearly any minor malfunction that led to a bit of panic.
That's not to excuse the error, but as I mentioned, I think out of control speed "bugs" tap into the public psyche a bit more than all the other possible equally risky bugs.