A road-borne tracker is an emergency tyre safety product, which is used when tyres are punctuated and temporarily unmaintainable. The advantage of being able to move a tire overland is that it is simple and fast, that it is not necessary to replace the spare, that it is not necessary to use a jack, and that being able to use a tire overland to fill the tires and automatically inflate them and then move normally. The land-based oscillator is a synthetic high molecular compound in white foam form. These refilling fluids are stored in compressed gas tanks and are injected into the tyre through the gas door when used, while the pressure of the compressed tank is used to inject liquids into the tyre while inflating the tyre. It is then carried out so that the intra-temporal retrenchment is evenly covered by centrifugal force on the inside side of the tyre, which is supplemented by an overland pedal capable of forming a sealed membrane on the inside side of the tyre. Accompanied vehicle maintenance techniques that allow owners to maintain their cars, improve their performance and market prospects, make them attractive for investment。