Just to muddy the waters on this thread a little................
This:
A BSA prototype 3 wheeler due to be named 'Ladybird'.
The first Ladybird prototype had a hand made steel body and was powered by an engine at the rear of the vehicle. The car was very basic and did not feature items such as spare wheel, traffic indicators or a windscreen wiper. Although basic the interest in the Ladybird prompted a second prototype in 1960. This model featured a windscreen wiper and the half moon shaped handlebars in the first prototype had been replaced by a steering wheel type control with the control resembing the top third of a circle. Sadly due to the falling demand in microcars in general the Ladybird was abandoned in 1960.
http://www.3wheelers.com/bsa.html