For an expanded explanation of what the equals sign means, check out Petkovsek, Wilf and Zeilberger's A=B. I remember it as a very enjoyable read from university, in parallel with Concrete Mathematics... (btw, why won't š show in comments?)
I've already got that - and it doesn't even need a parking space. It's called "taxi". A bit too expensive to use for going to/from work every day, but since there's a subway line right from my home to work that takes ~10 minutes, it's not much of a problem.
French? It is a pretty Swedish thing, with it being named after Anders Celsius and set by Linnaeus... Check the wikipedia entry on the history of the Celsius scale.
Passwords are implemented as a result of insecurity.
