The Austin Ant small 4WD, one of the products of Issigonis' magic, did not go into production - on cost grounds.
1922: "Baby" Austin 7 produced - 696cc engine, later 747cc. Unlikely as it may seem, racing versions were built and Austin 7s have even been driven round the world.
4WD Vehicles A-Z
4WD Toys & Models
History of 4WDs