Is anyone at all familiar with jetdog's vehicle prefab? Alternatively, anyone have any tips or help on working with vehicles in VRC?

I have the prefab working, but I'd appreciate some help in fine tuning the feel of it, as well as having sounds such as acceleration, etc.

VRC discord is predictably useless, and Jetdog's own discord is unsurprisingly, also useless. there doesn't seem to be a whole lot of info out there on this sort of thing. I'm beginning to see why 95% of car maps are so low quality