Electric car maker Tesla isnt having the best of weeks, following a drop in its stock price over fears of battery shortages and now a new incident involving one of its vehicles. A Model S in Tennessee caught fire on Wednesday after striking debris on the road, which pierced and damaged the cars battery. Tesla has responded by sending out a crew to investigate the circumstances of the accident, though the company stands by the safety record of its cars. Thats supported by the US National Highway Traffic Safety Administration, which determined that the other recent fire in the US, occurring in the Seattle area last month, was not caused by any safety deficiencies.