Carl is known to travel 200-400 miles per day. He enjoyed driving all over the State of Colorado and re-visiting sites that were important to he and his wife prior to her passing. He preferred back roads to major thoroughfares. He was last seen on the evening of November 14, 2017 at his residence which he shares with his adult son. He is hard of hearing and therefore did not regularly charge his cell phone which has been turned off since before the last time he was seen by his family. His vehicle is not equipped with any tracking devices.