After I sold my S4, I had the pleasure of doing European Delivery of my new 335 diesel in May. It wasn't my first time to Munich, but I did enjoy the factory tour this time around. I thought the Mercedes museum in Stuttgart was more impressive than the BMW museum. The Welt delivery center was nicer than Mercedes' delivery center.
I got to look through Audi's, but the factory wasn't open on my other trip over to Ingolstadt. Interested in hearing your review of that. Enjoy your time over there.