There was a pretty lengthy interview with Tech, its just audio and the timeline is about the time,when the news of alpha dog was breaking. I am sure one of you has it if you wanna throw it up there,if not I will but I am pretty sure Tech said that during a couple of shows they did together is when the talk of this song started, then Twista invited Tech to his grammy party up in Sunset hills, and that was where the idea of autobahn was discussed, combined with the fact that the legendary trackster did a beat or two for the Everready album, I would say that the track has a 70% chance of going down.
My two cents.