1955 Mercedes-Benz 300 SLR Coupe (W196S)

Side view of a streamlined silver racing coupe from the 1950s, featuring smooth aerodynamic curves, classic wire-spoked wheels, and a closed cockpit in motion on a racetrack.

Neil, CC BY 2.0 <https://creativecommons.org/licenses/by/2.0>, via Wikimedia Commons