I have spent 13 years of my career in Germany, and found the German people on the whole (including younger generation) are very respectful of other peoples property, obviously you do get the odd one who is a wretch
I am sure you will have no problem with having your car out there. I cannot offer advice on shipping/ where to purchase as I'm British Army....and I could drive across!
Autobhans are great roads, but be aware they are NOT all unrestricted, (and they are looking at putting speed limits on whats left) and where they are, if you crash over 120kph, you will AUTOMATICALLY be blamed for the accident!!:( Oh, and one other thing, it doesn't matter how fast you are going.....keep an eye on your rear view mirror, there is ALWAYS someone going faster
