从蓝图到实景，创新！“寒区试车”从一季“火”到四季“热”

Group 1 - The article highlights the transformation of Heihe, Heilongjiang, into a premier cold-weather testing site for automotive companies, with 147 car manufacturers and over 4,000 test vehicles participating in the winter testing season [4][21]. - Heihe accounts for 80% of the national cold-weather vehicle testing, showcasing its significance in the automotive industry [4]. - The testing area spans 2 million square meters, where vehicles are pushed to their limits to optimize performance and safety features [7][15]. Group 2 - Local residents, referred to as "ice road builders," have developed specialized techniques and equipment for creating smooth testing surfaces, which are crucial for vehicle performance validation [10][14]. - The article notes that the local team has innovated their own road construction methods, moving away from reliance on foreign technology, and now utilizes domestic equipment like the BeiDou navigation system [17][19]. - The establishment of a year-round low-temperature testing facility is underway, indicating a shift in strategy to leverage cold resources for continuous automotive testing beyond winter [21][22].