The RAM 2500 provides something for everyone with the choice of two engines (a 5.7-liter gasoline V8 or 6.7-liter Cummins diesel), three cab styles (regular, Crew and Mega cabs), four wheelbases and either 4x2 or 4x4 drive types. The 6.7-liter Cummins diesel features 800 lb-ft of torque when equipped with the optional 6-speed automatic transmission. Available safety features include dual front airbags, curtain airbags, anti-lock brakes and tire pressure monitoring. Heated and ventilated front seats, heated rear seats, heated steering wheel, power adjustable pedals, rear parking sensors, and a rear backup camera are available. Electronic and infotainment choices include a multimedia system with 40-gigabyte hard drive, navigation system, and a rear-seat DVD entertainment system. For 2012, a 6-speed automatic replaces the 5-speed automatic transmission with the standard 5.7-liter gasoline V8, and stability control is now standard equipment on all trims. ST trims now have a black grille and bumpers, and Laramie and Laramie Longhorn trims now include a standard navigation system and Sirius real-time traffic display.