Not to mention, they're virtually invulnerable to sabotage, as they can't be slashed, and their inner workings are protected both from malicious acts and from mud, dust and water by big metal plate covers. So they can also be made bulletproof for military vehicles.
Generally, only very high-end wheelchairs have shock absorption built in, necessitating wheelchair-accessible entrances to buildings. “It’s difficult and painful to use a wheelchair to cross the street, with the chair’s rider feeling the strong impact of a chair going off the sidewalk and onto a curb,” said Barel. “With a SoftWheel-equipped chair, a wheelchair user can cross streets or go down steps without feeling the impact.”

Have you ever had an oversized truck pass you and your vehicle sways from side to side? This is a sign of worn or weak shocks and struts. Weak, worn, or bad shocks and struts can cause very poor vehicle handling issues and ride comfort problems. This is because worn shocks and struts have lost the internal pressure and ability to keep applied pressure downward. This can cause excessive bounce and roll when hitting bumps or potholes, which can also lead to premature tire wear.
Event: SAE 2005 World Congress & Exhibition Also in: Advanced Hybrid Vehicle Powertrains 2005-SP-1973 Military vehicles and equipment Test facilities Test procedures Simulation and modeling Wheels