The Marvel comics directory claims "Captain America rides a Harley-Davidson custom special motorcycle, custom built for him by young motorcycle mechanic Jonathan Coulson of Queens, New York. Coulson modified the bike for the Captain in repayment for the Avenger's help in reconciling the youth with his father. Captain America then took it to S.H.I.E.L.D., where it was further modified. While living in Brooklyn Heights, Captain America stored the motorcycle in a service garage operated by Richard Dumbrowski. Captain America now keeps his motorcycle in his van and takes it wherever he travels."Panel from Captain America #318 "war on wheels"