Passive suspension systems for motor vehicles; suspension systems for motor vehicles; passive suspension systems for motor vehicle seats; suspension systems for motor vehicle seats; passive suspension systems for emergency and healthcare equipment; suspension systems for emergency and healthcare equipment; passive suspension systems for cargo; suspension systems for cargo; device that allows relative motion between two objects by minimizing the motion of the payload during transit; device for shock-mitigation for occupants and objects during transit; device for vibration mitigation for occupants and objects during transit; device for movement mitigation for occupants and objects during transit; device with a circular cam and lever arms to move the occupant or object in the opposite direction of the terrain for stability; device with a horizontal shock absorber connected to a circular cam to absorb jolts laterally during transit; device with an ultra-low friction cam, lever arms and shock for movement, vibration, and shock mitigation during transit; components and parts for the foregoing