Train would probably be the way to go. I was checking out the schedule the other day. Here's a link to the schedule -
http://www.nuerburgring.de/en/angebo...dschleife.html
and link to near by hotels -
http://www.nuerburgring.de/en/busine...nce-rates.html
There's plenty of info on their site. They've made much improvement in the past few years. Have Fun -