A flat tire is annoying enough as it is. Even worse is when you cannot get a cell phone network connection and are unable to contact the breakdown service. Good to have a car jack in such a situation. Along with the first aid box, warning triangle and jump starting equipment, this should have a place in every car. It is not just for the seasonal change of tires that it is indispensable, but for the aforesaid breakdown situation as well. Einhell offers hydraulic trolley jacks and bottle jacks. The latter are especially compact, but their jacking height is not quite so high as a result. The mobile trolley jacks are very practical, but are designed primarily for stationary work. A supplement that should not be underestimated is the axle stand, which is designed to prevent the vehicle from suddenly dropping.