... an immaculate Honda S2000. ....... What a beautiful machine.
At one engine consultancy place I worked at they had a database of engine friction tests they had done. The lowest friction engine on the list was the S2000.
As for "unintended accelerations", quite common over in the USA and they usually end up in law suits against the manufacturer, it nearly always turns out that it's driver error putting a foot on the accelerator rather than the brake pedal in auto cars. The brain says I'm braking but the car is getting faster so I need to push harder on the "brake" .....
Modern ECUs can tell what has been operated, often contrary to what the driver thinks they did.