In 1955, Harley Earl’s Art and Color Section created two Cadillac LaSalle II dream cars for display in the 1955 GM Motorama shows. One was a small four-door hardtop sedan. The other was a two-seat convertible roadster. Compact V6 experimental aluminum engines powered both. Both LaSalles had 1940’s style vertical grille openings, Dagmar bumper guards and the LaS insignia as used in the marques' early years. The hardtop sedan had rear-hinged back…