beamng has been developed for vehicles but you are not seeing the bigger picture if you think thats all its good for. thats the same sentiment as ue4 is only good for 90’s zombie shooters.
bullet has vehicles and cloth and destruction and softbody and documentation and is cross platform and free and open source. seems an ideal replacement to me…
no point in arguing over what if’s though, ue4 is stuck with physx at least for the foreseeable future.
as for implementing features like softbody ourselves, if the people who made physx cant even get it working properly what chance does anyone else have.