umagaar

I've also been asking this question on this thread, on my own separate thread in the support section, on the subreddit and on the official discord server, but I have gotten no reply anywhere. Is it possible to get a response on this?

They state that you can access the previous build (21), through the Steam beta tab, but I can't find them in the dropdown menu (see attached image). I can't see any beta branch named previousvehicle. How do I access the previous build?