Experienced runaway acceleration in my 350ES today. It had nothing to do with mats or acccelerator. We were on 6 land highway with no breakdown lanes. Fast traffic.
Cruise control took control of engine and only strong pressure on brakes kept us from crashing into car in front of us. My husband was unable to trun off cruise control, shift down, or into neutral. Only could stop car by turning it off with jolt. Police confirmed that car restarted with frightening noise of acceleration of engine that indicated it was ready to runaway again.