Uncontrolled acceleration of 2008 Toyota landcruiser resulting in run-away situation on interstate highway in rain. Speeds in excess of 90 mph. Gas pedal was operational. Engine could not be turned off. Engine ran at >7000 RPM while in park for several minutes. No control of vehicle speed, acceleration, or engine. Require massive brake pressure to get vehicle to 60 mph and then place engine in neutral. During entire episode, accelerator was free moving and made audible "clunk" sound when foot rapidly removed from petal. When vehicle was in neutral on the side of the road, the engine oscillated from 8000 RPM to 7000 RPM. Engine would have ran all day had we not figured out to keep ignition button depressed to cut off engine. Could not place vehicle in park gear due to excessive RPM and had to go through reverse gear to get to park gear. Engine compartment smoking due to hot brakes. Petal was not impeded by rubber floor mat installed in vehicle at time of purchase. Toyota engineers inspected vehicle and could not find any problem. Brakes are warped/blued due to extreme heat from braking vehicle speed in excess of 100 mph to 60 mph in rain. Electronic dash ignition button did not cut off engine. Toyota informed us via E-mail that there was no fault or safety issue with truck and ok to drive. Truck had mind of its own.......

- Allen, TX, USA