My parents had anything from Jeeps and big American cars (A Ford Galaxie was a prominent part of my childhood) to different European cars, an Audi 100LS, First Gen VW Golf/Rabbit, VW Bug etc... - my father was a Citroen lover and we had multiple Citroen 2CVs (I believe my maiden car ride from the hospital was in a 2CV van) - as well as a Peugeot 403 - later in Europe they had a Citroen Visa, a Citroen GSA (loved that car), a Citroen BX and later a Peugeot 309 (from the time it was a 205 with a boot) and when I was in college, they had a 205 GTI (which was one of the greatest hot hatches ever made, what a lovely car that was, I would have loved to have kept it).
When I was growing up we ran across a 2CV Sahara and I implored my father to buy it, he refused because it was not worth the hassle and was too complicated, but that was a big mistake - as they are super rare, less than 700 were ever made. This was a 4x4 2CV that solved the 4x4 problem using a simple french method - but putting a 2nd engine in the back to power the rear wheels. These cars go for over $100K now...
Someone at our local car club brought a 2CV Sahara last year...
Notice that gas cap in the driver door - the gas tank sits below the driver seat - since the rear is filled with another engine.
There are 2 engines, 2 gearboxes in the car, and both are controlled by just 1 set of controls - so the engines /gearboxes are usually a little out of sync - so changing a gear might have one engage before the other - a very interesting driving experience...