1970 Oldsmobile Ninety-Eight Convertible   One of only 3,161 convertibles that year on the upper rank Ninety-Eight model lineup. The namesake of Ransom Eli Olds who cobbled his first car in 1891 with regular production getting underway in 1897, making Oldsmobile the oldest surviving nameplate among American makes until the final production day at the company, April 29th 2004.