Professor Richard Schmidt says user reports are often unreliable: 'When the driver says they have their foot on the brake, they are just plain wrong."
My '08 Prious has had three "surge" events. I was able to stop all three times. In the most serious case there was a group of people standing about 20 feet in front of me, and my car stated surging towards them. I jammed my foot on the brake but was not winning the battle. Normally the Prius brakes are very sensitive and do not have to be pressed hard, so I was using my normal braking force. Quickly becoming alarmed, I pushed harder on the brake, with some effect, but still fighting the electric motor and the gas engine trying to power the car forward. I had to push harder than I ever recall doing to stop the car. At that point engine activity ceased. The people, now about 10-feet away, looked at me like I was an idiot, gunning my car toward them! I was just glad to be stopped.
I challenge professor Richard Schmidt: If my foot was on the accelerator, how did I in fact stop?
The Toyota people have told me they'll be reflashing the processors of all the Prius cars in a few months so any brake signal will shut down the engine. Why wasn't that done from the beginning? But anyway, I'm looking forward to the modification. In the meantime, I'm practicing quickly hitting the Neutral gear lever.