15 centimeters, that's just a little more than 5 inches.

But, apparently, that's more than enough room to parallel park your vehicle, at least if your name is Han Yue.  He set the world record recently for tightest parallel parking by parking his vehicle in a spot that is only 15 centimeters longer than the total length of his car.

Granted, this is impressive, but I do believe if you try to parallel park like this during your driver's test, you would probably fail...in fact, the instructor would probably slap you.