The National Highway Traffic Safety Administration (NHTSA) has closed its investigation into Tesla's "actually smart summon" feature, which allows users to summon their cars to a specific location without a driver. The NHTSA found 159 incidents involving the feature, including 97 crashes, but these were not particularly severe. The decision to close the probe was made following several over-the-air software updates from Tesla aimed at improving detection of camera blockages and dynamic gates.