Had the chance to drive one at Zandvoort race track this summer. One of BMWs finest, Claudia, drove the 'ideal line' and all the data was being loaded as she drove. Then we road around for a few laps to try to remember the line. The idea is that this is a better learning method than following an instructor because on auto-pilot it will take you along the exact same line each time.
After that, we drove it in the hands-on mode and that's where you got crazy. As you tried to follow the line, buzzers/red lights/vibrating wheel were constantly on your a** because you were straying off course, the margin for error being less than a meter.
I dunno, even the BMW instructors acknowledged that there is not one ideal line because everyone's style is different and one person's ideal may not be the fastest for another.
Either JC was over dramatizing for the audience or he's a wuss. If you can't trust BMW to get it right, who can you trust? :wink: