Board Thread:Game Discussion/@comment-31534476-20190529055741/@comment-32545704-20190603154202

There are some cars which started with one series but were added to more over time. For example, the Testarossa started out in one series, then it got an exclusive series and now Clash of Icons with the Bugatti. Similar with the Mazda RX-7 and the Ferrari 812 Superfast, both are now in 3 series. The Silvia R3 Spec started with one and now has 4. So hopefully they will do more of that.

Personally I don't mind them adding cars to existing series, even if it is only for small recompletion rewards. It's usually only two or three tiers anyway. McLaren Generations where you had to redo the whole series was different, the series was completely rebuilt (due to the F1 GTR PR change) and progress was reset to zero. They probably should have given full completion rewards for that, but I think it was a one off.