Most of the people that are a few states over from Kentucky and have expedited you package will be placed on a semi truck and driven to your city. Expedited is considered a 2nd day air and can and will be placed on a trailer. Don't worry you will have it tomorrow. If you are on the west coast then you will probably catch a flight and then a trailer the rest of the way. I am a Upser and this is what my manager told me.

don't listen to a word this guy says, he's been telling everyone they'll get their phones tomorrow since Sun. your phone will be stuck in KY FOR EVER!!!!! DUNDUNDUUUUUN
of course I'm jk'ing, i really do appreciate tech and wasabi giving us crazy weirdos more info to obsess over
happy iPhone 6 eve!!!!!!!