So, new FM7 challenges, and guess what? Glitched, as usual... Thanks for the Quality Control M$
The day this became available, I tried this one and the one that starts with 5 laps at Bathurst. I did the first stage of both challenges three or four times, satisfying them and getting no advancement whatsoever.
Then the Forzathon menu selection became unavailable and then re-available the next day, so I tried again.. Still no luck. Finally, I did get some reaction for the first time tonight, so I will log in what I was able to and fill the rest later..
1) First just start any race in free play. As soon as the race starts out, pause it and switch to photo mode in the menu. Take your photo and Save it. When offered, select Save and Share. Select any values from the two dropdown you'd like, name it and share it. Once you share it, you will probably not get credit for the first stage of this challenge until you take some action to shake things loose. Some say just running another race and then coming back to the challenge will do it, but that never works for me. However, mostly if I exit FM7, then start another game and come back to FM7, when I come back I will have gotten credit for that stage.
2) Just select Driver Gear from the default menu on the left and switch out for something other than you are wearing. Again, if the stage doesn't pop, exit FM7, run something else and then come back to FM7 and you will probably have moved on to the next stage of the challenge
3) Finish any race. I tried to do a free play drag race. I finished it, checked the Forzathon status from the menu, again, no advancement, so I left, ran another game and came back to FM7 again. This time, no luck and no advancement, however, I feel pretty sure that it will ultimately break loose. Probably tomorrow, since it is getting late to keep messing with it tonight. If not, I will try something other than a 1/4 mile drag, but since that has worked for other challenges, I'm pretty sure that is not the problem.
Edit: OK, after exiting and re-entering FM7 2 or 3 times and running the same race again, I eventually did get credit for the race and the challenge, as it popped right after the end of the second drag. However, the menu still shows as though it is incomplete. I'm sure, as with other challenges in this game it will eventually resolve itself. It would just be nice if you didn't have to battle with it all the way along.