Dynamic Vehicle Authoring

Vehicles can be created and destroyed while the simulation is running. This is called Dynamic Vehicle Authoring. This feature can be used to warp vehicles from one end of a street to the other in order to create the illusion of an endless stream of city traffic, for example.

Presently, there are a few restrictions with how this is done:

1. All of the vehicle primitives (prims) must be created within a single simulation time step when creating a vehicle. Many of these prims reference other prims and the vehicle creation process will fail if the referenced prims are missing.

2. A Physics Scene must be created before the simulation is started and it must have the PhysxVehicleContextAPI API schema applied.

3. To destroy a vehicle, all of the vehicle prims must be deleted within a single simulation time step.