Driving in winter conditions can be slow and hazardous, even for skilled drivers. The self-driving cars in development today are generally designed and tested on city streets, with curbs and lane markings and GPS maps to rely on. But what happens when you live in a country like Finland, where roads covered with several inches of snow are a fact of life every year? Researchers at the VTT Technical Research Centre are tackling that problem head-on with Martti, an autonomous vehicle specifically programmed to safely navigate public roads blanketed in snow. Built on a Volkswagen Touareg, it's equipped with a variety of antennas, sensors, cameras, and laser scanners.