The problem with just logging like that is in the reliability of the logs - what if there's a defect in the position sensor? The pedal (and thus the logs) may report throttle at 100% and breaks at 0% even if it was the other way around.

Yeah, but what if the pedal state was bugged?

Look, a carpet snagged on pedals a few years ago and that was sufficient to cause a recall.

http://www.consumerreports.org/cro/news/2011/02/toyota-annou...

That's the level of service I'd expect from any major auto-company. Just because the pedal was down doesn't necessarily mean that we've got driver-error going on here.

What is complex about logging video footage with sensor overlay (or still shots)? Plus it gives you evidence that any jury can understand.