Vehicles/Bulldozer/Rigid
NoUndercarriage
NoUndercarriage is Bulldozer.Base:
chassis becomes MachineModeling.Components.Primitive.Base with Bulldozer.Interfaces.Chassis.BaseConnectors, Bulldozer.Interfaces.Chassis.Outputs
drive_train is Physics3D.System
left_track is TrackSystem.Base
right_track is TrackSystem.Base