Retro Car UGR-TRetro Car UGR T Assemble me. Drive the legend! The Retro Car UGR T pays homage to the dawn of the automobile age. Ugears' team of engineers and designers have developed a special, classic car model to take you back to that age. To operate the Retro Car UGR T, set the Start Stop button to "Stop" as you wind the spring powered motor using the built in ratchet key under the chassis. Place the model on a flat surface as you hold it with one hand, press