What American car starts with A?

Aurora (Oldsmobile), Alero (Oldsmobile), Aztek (Pontiac), Astro (this name was used both by Chevrolet and GMC for entirely different vehicles. The Chevrolet Astro - also sold as the GMC Safari - was a minivan, whereas the GMC Astro - also sold as the Chevrolet Titan - was a Class 8 cab-over-engine semi tractor), AMC (now defunct car manufacturer).