sentences:  GMC Astro
  
  The Chevrolet Titan and GMC Astro are heavy-duty (Class 8) cabover trucks that were manufactured by the GMC Truck and Coach Division of General Motors.The largest cabover trucks ever produced by GM, the Titan (and more common Astro) were introduced for 1969, replacing the 1960-1968 GMC "Crackerbox" COEs.