borrowed my gfs 2CV way back, never driven one before. took me 30mins to work out wth was going on with the gear lever. I felt like one of those lab chimps pressing buttons at random watching lights go on and off, but no food being dispensed ...
another 2CV quirk: I discovered that if you reverse at high speed for more than a couple of hundred yards, the gearbox disassembles itself. there a bolt in there somewhere which relies on the box turning in fwd gears to stay tight. its on the end of a shaft and after a while in reverse it winds itself off the shaft, followed by all the cogs lol.