The panic he describes reminds me of my learning to drive. I'd been an avid cyclist, and the sensation of the car moving under its own power, independently of me, was shocking.
You might not want to skim through the forums (though I find the discussion interesting). In the end, this actually happened and you can see a video of it here https://youtu.be/jJT_CACIZqs?t=6m18s EDIT: and rdancer also linked to the final report, see his post, thanks :)