DG,
Can't help with the RAF using Autobahns, but will confirm the commie's did in East Germany right up to East becomming West, have piccies to show it and it is awsome, the Autobahn from the Berlinering to Frankfurt en Oder had a special wide area with dispersal at each end and the centre, it was about 12 lanes wide, no central res, traffic just had to keep into imaginary lanes but being prepared to stop at a minutes notice, the Rooshian's soldiers achieved this by driving APC's and T55's across the carriageway at one end and you had to get off the other end as fast as you could, otherwise you would be held up by armed soldiers until big grey birds had slurped some avgas and got airborne again, this happened nearly every day, somewhere I have a load of picces of just that, will try to find em.
PeterR-B