Same here...
Sad days for ATI users that's why my request for Ruud to separate Racer physics core code into Unity (dll & stuff) & let us handle & recompile stuff as we would like...
Please support this idea, with me, Unity is free & have a half billion of users now...something like 10.000 unity Packages, some of which have everything we dreaming about...
I'm now comparing Racer with Edy's Vehicle Physics & UnityCar, it's amazing how smooth all behaves & how all somehow feels the same...