The 1958 Buick was marketed beginning in September 1957, just as the space age began with the launching of Sputnik I on October 4 of that year. The "Sweepspear" evolved into the "Delta Fin" reminiscent of a rocket ship, which appeared on the all-new appearance for 1959, and was trimmed down in 1960 and removed for 1961.
The 1958 Buick was marketed beginning in September 1957 just as the space age began with the launching of Sputnik I on October 4 of that year The "Sweepspear" evolved into the "Delta Fin" reminiscent of a rocket ship which appeared on the all-new appearance for 1959 and was trimmed down in 1960 and removed for 1961