Ammo.JS + SEA3D Studio Editor
Ammo.Lab by Loth was the great contributor to ammo.three.js which is the basis of SEA3DAmmoLoader.js the physical engine initially chosen for SEA3D by meets a wide variety of features like Geometry Collision, Car/Character Controller and various Primitives types.
Physics Example (Geometry Collision)
Editing is currently made in SEA3D Studio, you can link Bodys in others Rigid Bodys, create a Car trough of User Interface, set mass, restitution and other parameters.
Car+Physics (Open with SEA3D Studio)
Any question we are attending in the community.