Oh double WOW! That means the Crown gained value against the dollar over time!
As for buying cars with cash, just ask my dad. He financed a car once, and said never again. But even though he likes to pay for his car all at once, I don't think he uses actual cash, but something like a bank transfer.
Hehehe, "as long as possible" means as long as you want. After all, it's 100% the decision of the Czech republic, and no one else, to adopt the Euro or not. In Germany it's quite common to hear the same argument you made, that it doesn't make sense to have the same currency as Greece. But what's the next thing Germans usually say? Oh, that they had no choice in the matter, and that it was France that forced Germany into the Euro. Yeah, right! And if you look at Sweden or Denmark, I don't think they ever intend to join the Euro zone either. It's totally up to them.