Question: What is the name of the British car that debuted at the Earls Court Motor Show, London, on 20 September 1948, from which the floorpan, suspension and steering were utilised for the Riley One-Point-Five?
Sentence (from "Riley One-Point-Five"): The Wolseley was released in April 1957 and the Riley was launched in November, directly after the 1957 London Motor Show.
Relevant evidence: No