Microvehicle with two components (IMAGE) ETH Zurich Caption Computer graphic of a microvehicle with iron wheels (gold) and a polymer chassis (red). The vehicle measures just 0.25 millimetres long. Credit (Visualisations: Alcântara et al. Nature Communications 2020) Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.