Yeah, that's why I put the questionmark. Who ever it may be for, I would think it would be pretty good publicity for any F1 team to run Robert in FP1 once or even more times.
Why Lotus? They aren't best friends anymore.
Also it looks like single seaters are not possible (at least for now).
DTM with BWM does seem to make a lot of sense, doesn't it? If he could throw in a couple Pirelli tests and an FP1 for good measure later in the season, it may be sufficient preparation to see how he might do back in a F1 cockpit...
Very interested to see how this may pan out - I was never a fan, but it would be a fantastic comeback (it really already is!), and I hope it happens for Robert.