7 1 8Actions Report Solution Just a note--this didn't pop for me using the Mercedes 300SEL 6.3, which was a Forzathon reward car. Switched to the Alfa TZ2 and it worked.Showing all 8 comments. Leave a comment. The Alfa-Romeo 33 Stradale didn't work for me either.Also the german description reads "classic rally" not "classic racer" :DPosted by KO771 on 11 Aug 17 at 17:05 The 1966 For GT40 Mk II did not work for me.Posted by Xtowers on 11 Aug 17 at 20:40 I did two online adventure races in the Shelby Daytona, and then a whole online adventure in a Ferrari P330 - got the challenge for doing the adventure, but not this one. Dropped back to single player and tried an exhibition in the Daytona again, and it popped. Looks like online doesn't count for this one?Posted by Swooshiain on 11 Aug 17 at 20:56 Online does not count no matter what car you use. However, some of the cars don't seem to work for single player either.Posted by GroupB on 11 Aug 17 at 20:59 The 69 Lola you get from this Forzathon works.Posted by Alehldean on 12 Aug 17 at 00:24 I used the Mercedes-Benz 300 6.3 in an exhibition race and it popped for me.Posted by EvrClr666 on 13 Aug 17 at 00:57 I did an exhibition race using the 69 Lola and it didn't pop for me. However it popped when i was doing convoy race in freeroam minutes later. So it might just because unlocking can be delayed.Posted by Player246785740 on 13 Aug 17 at 02:28 The Ferrari 250LM worked for me.Posted by Yin on 13 Aug 17 at 15:16 Leave a comment