This vintage British bike sports one of the most unique engines ever to grace two wheels. Edward Turner’s idea for a four-cylinder ‘Monobloc’ was picked up by Ariel and debuted in the first aptly named Square Four in 1930. Here, in its fourth generation, and only a few years before its production ceased entirely, the motorcycle is mated to a matching Garrard sidecar that is packed to the hilt with champagne. The duo is seen featured among many other rare finds at the Peddle Beach Councours d’Elegance.