Gearbhokisi zvinhu zvinokosha mugadziriro dzokuendeswa kwemotokari uye mudhudhudhu, kuita basa rinokosha mukudzora kumhanya kwemotokari nokutamba. Zvikurukuru, gearbhokisi chidhiso chinochinja kumhanya nokuda kwenjini, kubvumira motokari inoshanda nenzira inobudisa mumamiriro ezvinhu akasiyana - siyana. Kune marudzi akawanda emabhokisi anowanzoshandiswa mumotokari, imwe neimwe inoshandisa