@DazzlingDamo: Have you ever heard about Friend Wood's #Tryane II, a three-wheeled #Dyane (i.e. more or less a #2CV) with an aerodynamic boat-shaped body made out of wood? The frontscreen is the rear window of a #Citroën DS.
https://singletrackworld.com/forum/topic/what-a-car-thread-friend-woods-tryane-ii/
http://www.oecc.org/Galery/Tryane.php
There's even the story that Tryane II was so efficient and fast that he had an accident due to too much speed. He then replaced the engine with an older, less powerful one.