We've all seen The Bus from TML and this from the review video here, I need to take a better look at but real physics are possible with UE just they need to actually do it. Dovetail created the SimuGraph engine because they felt UE's physics engine was limited, just they're making money, countless DLCs and no option to work with third party devs (yet)
But I digress, there's too much quantity, not enough quality. The Bus looks amazing, hopefully it lives up to it but I dont know.
This is what you can do with UE4
I am yet to see this