I must protest about the exclusion of one of the greatest all-rounders of any age: Piero Taruffi.
He raced on motorcycles from 1923 to ’51, establishing 53 international motorcycle speed records. In cars, he won the Carrera Panamericana, the Nurburgring 1000Km, Targa Florio and the Tour of Sicily.
He raced and won in all classes of singleseater from 500cc to grand prix races, was Italian F2 champion and Italian Sportscar champion, and won the last Mille Miglia proper in 1957.
I feel that the achievements listed above show that Taruffi was a driver who more than meets the requirements needed to be listed as one of the very best all-round drivers ever.
I am, yours etc, VJ Brownsell, Old Town, East Sussex