The National Highway Traffic Safety Administration (NHTSA) has opened an investigation into possible fire hazards in some 2007 Camry, Camry Solara and Rav4 vehicles. According to reports filed with the NHTSA, owners experienced a burning odor, and eventually flames coming from inside the doors. The problem is suspected to be caused by a malfunctioning power window master switch control. If the investigation leads to a recall, almost 830,000 vehicles could be affected.