Monocars
Monocars have taken many forms, and are variously referred to as einspurauto, dalnik, bromauto, monotrack and cabin motorcycle. More than a few are the work of aviation engineers, and designers include the likes of Louis Lucien Lepoix, William Brough and Philip Vincent.
Cerreti Motocar France
Dalnik Czech
Peraves Switzerland
Avro UK