26. Cooper cars had their first win in the first race of 1958 (the Argentine GP), courtesy of Rob Walker's privateer team. What driver achieved it?
From Quiz F1 Seasons: 1958
Answer:
Stirling Moss
Moss was a Vanwall driver, but the team's cars weren't ready for the first Grand Prix of the season, so he was allowed to race for Rob Walker. The second race of the season, the Monaco GP, was also won by a Rob Walker Cooper, driven by the team's full time driver Trintignant. Salvadori and Brabham raced for the Cooper works team, with no wins this season.
World Champion Mike Hawthorn had just one win (the French GP), but was more regular than the Vanwall drivers, Moss (who, aside from the Argentine GP, won in Holland, Portugal and Morocco) and Brooks (who won in Belgium, Germany and Italy). Peter Collins had Ferrari's other win, in the British GP, while Jimmy Bryan, in a George Salih entered Epperly-Offenhauser took the Indianapolis 500.