Across the United States, the rules for checking tailpipe pollution are quietly shifting, even as climate targets grow more ambitious and electric vehicles grab headlines. States are carving out ...

The National Highway Traffic Safety Administration collects crash data about autonomous vehicles, but only issues voluntary guidelines about expectations for those vehicles. Those guidelines softened ...

Ten new cars, five days, no fans. And plenty of security. Formula 1 started a new era with the public and the media excluded from the teams' reliability-focused private testing session in Spain on ...