A 46-year-old woman was killed in a fiery crash Saturday afternoon when her car went off Viola Road and burst into flames.Warren County resident Maria Lopez died at the scene Saturday around 4:30 p.m.According to the Tennessee Highway Patrol, witnesses rushed to help Lopez, who was alert and talking after the single-car crash. They tried to get her out of the car, but the dash was pushed against her body, pinning her inside. Lopez was unable to be freed before flames consumed the car.“The fire killed her,” said state trooper Josh Sparkman.