I've added a beta version of the upcoming update. It features the work in progress car models, improved lighting and performance, drone scanned Bradford track work in progress and controller rumble.
You can select it by going to the beta tab. You can remove it any time and the released version will be downloaded.
If you don't know where that is, here is a tutorial video:
Beta version of the upcoming update
Source: Steam Community (opens in a new tab)