<prompt> Nyorai kupfuurira kweiyi ndima - Mathieson akapinda ERA E-Type naLeslie Johnson semutyairi, we1949 Richmond Trophy, Jersey Road Race neBritish Empire Trophy, pamwe neBritish Grand Prix ya1950  <response>: . Mamwe manyuko anotaura izvi sezvinonyorwa zvepamutemo zveERA nokuti Johnson akanga atenga mugadziri wemotokari makore matatu akanga apfuura. Mathieson akatenga 2-litre Frazer Nash Le Mans umo akawana kukunda kwekirasi muna 1950 Maawa makumi maviri nemana eLe Mans pamwe chete naRichard Dickie Stoop. 