How fast could a 1956 Buick Special and a 1964 Cadillac Coupe Deville go?

State the car and your specific estimate.How fast could a 1956 Buick Special and a 1964 Cadillac Coupe Deville go?110 for the Buick, 120 for the Caddy.How fast could a 1956 Buick Special and a 1964 Cadillac Coupe Deville go?Does it matter ?? You are referring to older classic cars that are not race vehicles..they are meant to be treated with respect, please :}