The front and rear cars bumpers are installed with gas/hydraulic energy absorbers capable of accommodating a full impact into a fixed barrier at a speed not exceeding that of five miles per hour; in details, the front bumper energy absorber collapses upon a five mph impact into a fixed barrier, and reasserts to its initial state afterwards, while the rear bumper absorber has similar capabilities. In any collision, the energy absorbers should be checked and if the outer part is damaged, or oiled leaked, the unit should be replaced as it is working assembly is not designed to be dismantled. Furthermore, because the units contain gas, one should not apply heat to an energy absorber or weld adjacent to the item.