This is the Lawson Neracar made in the late 1940s by combining a 4 cylinder in-line Blackburne engine with a Neracar chassis and adding some beautifully flowing home-made bodywork. Compare and contrast with the more boxy Avro Monocar made two decades earlier.
Built on a Neracar chassis, Mr Lawson built this in 1948 using a 288cc straight 4 from Mr Haythorn. It had outriggers that dropped under gravity and locked in position. They can just be seen hiding in the rear bodywork.