Ramstein is a huge Air Force base. I used to visit there all the time when I lived in Germany. Beautiful country ~ I will go back and visit one day.
Now about your car. If you plan on selling it, sell it HERE in the U.S. before you go. If you sell it in Germany (many soldiers overseas sell their cars) you will get next to NOTHING for it. People are selling their cars ALL THE TIME because they are moving from base to base and have no need/time/effort to bring old cars with them. My dad used to pick up cars for just a few hundred dollars *mebbe a few thousand for a late-model car* then sell them off for profit after driving them a month or two.
If you sell you Legend there, I doubt it would go for much more than $2000 at most ~ that's just how it is. However, if I were in your shoes I'd love a chance to try the Legend on the autobahn; where it was MEANT to drive.
If you buy a german car, it will be MUCH cheaper there. It is common for servicemen to buy a german car there and then bring it back to the United States after their tour. However, the car must be bought in U.S. spec, although there are a few Europe-only things on a car that can still be brought over (you'd have to check to be sure).
Good luck with your PCS man. Germany is a wonderful place and you'll have much to appreciate there.