Giant Moth?

This morning as I was backing out of the driveway, I saw this huge moth/butterfly thing on Andrew's car! It was so big that I promptly stopped and ran in to get my little camera. Seriously, his wing span was probably at least 8-9ins or so. Before long, I decided that I really needed to get out my big camera. Andrew soon joined me (took some pics of his own, and yes, this is one he took... ) and we study the little guy for quite awhile. Needless to say, I was about 30mins late for work :)