You used to have to wait until level 20 to buy a mount. Level 20 took forever, and then you could only buy the slow mount for your race. You didn't get a fast mount until level 40, which took a very long time.

Ha, rookie numbers. In my time you had to wait for level 40 to buy your slow mount. Fast mounts were bound to level 60 I believe and were insanely expensive (I sold so much stuff in the auction house to get the money together in those days). Around level 20 or 30 Hunters got an aspect which increased their running speed and druids could shapeshift to travel form.