No I have not, and I doubt I would like it as a game in itself. The general formula for random/radiant/emergent events during long(-ish) journeys is a pretty common gameplay element for ALOT of games. In ED, there are is a combination of factors/elements - the travel element is just part of the course.
Well, in defense of Desert Bus, that game required you to keep steering the whole 8 hours. Of course, that was entirely useless and unnecessary, but even that can be considered a kind of gameplay, albeit a terrible one.
In contrast, for last week CG I made 70+ trips to Judson Station 161k lys away from the entry point because I wanted the Alliance to get at Tier 6 and after the first 20 seconds and the last 70, no action was needed from me for 10 whole minutes. So I came here to post, I watched youtube videos, I prepared me a Sandwich, listened to the knowledge base 2 times, finished the first part of Asimov's "The Gods Themselves" and fell asleep twice. I even went on Open to see if I had something else to do but, just like the NPC interdictions, the PvP Gankers were only at the entry point and at the destination point, so even with them around I had around 10 minutes to do nothing.
So for an accumulated time of almost 12 hours for a week I "played" the supercruise part of the game which consisted of me doing absolutely nothing because I wanted to support a specific superpower. Thus, Desert Bus could have given me more gameplay for the same amount of time played.