I think auto manufacturers tend to send their top drivers to the Ring. These guys are professionals, many with former GT or F1 experience. They are the cream of the crop when it comes to drivers, so I think they tend to be safe bets. Also the fact that it's not a race. They are simply testing the car for production purposes, fine tuning, etc. It's a more controlled environment overall which makes it much more safer than a race.
That being said, I have no problem with the 'Ring as a track except what I've mentioned already. I hope they find some way to save it, though it seems to be hopeless at this point. If they do manage to keep it open for public use, then I'll take you up on your offer next time I do a European delivery.
'13 Audi A6
'07 Porsche GT3 RS
'08 BMW E90 335i