Asymmetric Bridge is a data transfer and caching system for creation of effective studio pipeline. (not released yet)
MadCar, This plug-in is for wheeled vehicle simulation in 3DS Max, including motorcycles and other vehicles with any number of wheels, and with any of their mutual arrangements.
CityTraffic, is the plug-in for 3DS Max which helps to create car traffic flow on the roads and off-roads.
SplineLand, is a plugin for 3DS Max that helps to generate topographically accurate terrains from a set of splines