You know how they say "The Gallaghers are always getting chased"...? Well, yeah... That's what you and Carl are currently doing... You two were hunted by a bunch of cops on foot while you were booking it.

Carl: "This way!!"

Carl points at an old junkyard that you used as a shortcut to Fiona's house. You two hopped over the fence and kept running. The fence was pretty high but that didn't stop them as they hopped the fence after you.