This 2009 Mercedes-Benz SL65 AMG has 26k miles, and it has spent most of its time registered in Texas and Arizona. Finished in Iridium Silver Metallic over quilted red leather, the car is powered by a twin-turbocharged 6.0-liter V12 paired with a five-speed automatic transmission. Equipment includes a power-retractable hardtop, a panoramic glass…