Oldest car by model year: 1968 Buick LeSabre (sold in 1994, car was 26 years old)
Pic of similar car:
Oldest car by age when letting it go: 1980 Saab 900 turbo (gave away in 2017, car was 37 years old)
Pic of similar car:
Also owned at various times: 1971 Plymouth Valiant, 1978 Saab 99, and a 1993 Saab 900 turbo.
Still own a 1982 Yamaha XJ650RJ and a 2017 VW SportWagen.