LANSING, Mich. – For the second time this week, the U.S. government’s road safety agency is sending a team to investigate a Tesla crash in Michigan. Previously, it had taken a hands-off approach to the new technologies, favoring voluntary safety compliance so it wouldn't interfere with the promising safety systems. Neither the trooper nor the 22-year-old Tesla driver were injured in the 1:10 a.m. crash, police said. Earlier this week NHTSA sent a special crash investigation team to Detroit for a crash that involved a Tesla that drove beneath a semitrailer. NHTSA has previously investigated more than a dozen Tesla crashes, but hasn’t made public any action.