Please send a mail to [email protected] with a description what happens and your Unity player log file. Any additional information might be useful (OS Version, specifics about your computer).
You can find the log file here: Linux ~/.config/unity3d/Playables/CARS/Player.log macOS ~/Library/Logs/Playables/CARS/Player.log Windows %USERPROFILE%\AppData\LocalLow\Playables\CARS\Player.log
Thank you!