Air horns? really... https://www.kijiji.ca/v-classic-car...ra/1359986894?enableSearchNavigationFlag=true
I was figuring they had the General Lee's "Dixie" programmed in. Looks like a rather nice one overall although not highly optioned.
The ad says "I have a 1964 Buick Riviera for sale with all original factory parts, no modifications." So it must be original....