I was thinking of the BMW Factory in Shah Alam to start with.
But if you guys are serious about going to the BMW Factory in Munich, I am game too.
I believe the tour cost Euro 6.00 and takes about 2 hrs. BMW Club members get a discount.(not that it matters)
see
http://www.bmw-plant-munich.com/lowband/com/en/index.html
You may need to put aside about RM15-20k for the trip to Germany.
You can also visit other factories eg Mercedes, Porsche. Drive on the Autobahn and even coincide the trip with the Frankfurt Motor Show which is in September 2008.
I actually got this Germany idea from a friend who had done it before.
I would be happy to do some research on this.