This 1956 Ariel Square 4 features a matching Garrard sidecar (stocked with Champagne!). If you take a quick glance at this Ariel, you might notice something doesn’t quite look right. This is because tt the heart of the Ariel is a 997cc square-four engine, or “Squariel”, which was designed in 1936 by the unemployed engine designer Edward Turner.