[Illusion]

LOL. Running in buildings is such a nice feature, I feel like a jerk sometimes with it though.
Think about it, I could break into some grannies house, run around talking to everyone like some maniac, steal all their goods, scare them to teach me their family's secret Pokemon move, or simply force them to trade me their rare pokemon for some crappy one you can catch outside in a minute.
Running only adds more rudeness in the midst of it all.