Three examples of death by right foot braking of automatics:
A retired driving instructor was manoeuvring his Mini automatic in a supermarket carpark using only his right foot as he had always taught his pupils. Either the engine surged or he had a spasm. He quickly stamped his right foot on the brake, hit the accelerator instead and the Mini went into a wall. He died of his injuries.
A man was parking his BMW automatic in a Hong Kong multi story car park. Either the engine suddenly surged or the driver had a spasm. He tried to brake. Hit the accelerator instead of the brake. Crashed through the safety barrier and plunged six floors to his death.
An elderly gentleman was reversing his automatic car one footed, aided by his wife of 50 years standing behind it. Suddenly the car surged and he has unable to get his foot off the accelerator onto the brake before he had run her over and killed her.
The driver may then panic, attempt to brake heavily, but hit the accelerator instead of the brake, and the car either crashes or runs someone over. (The phenomenon even has a name: 'Sudden Acceleration Syndrome'.)