A shock and energy dissipating device includes a number of cylinders attached to an outer peripheral portion of the vehicle for being actuated when a force is applied onto the outer peripheral portion of the vehicle or when a collision happened to the vehicle. A seat device includes a base seat member, a base support for attaching to a bottom of the vehicle, an upper support for attaching to the base seat member and a moving device disposed between the base support and the upper support and coupled to the cylinders for moving the base seat member in response to the cylinders and for absorbing and dissipating an energy that may be transmitted to vehicle drivers or passengers of the vehicle.