♪ that kind of freaks out [ beep ] [ female nouncer ] no one delivers the holidays like the u.s. postal service. priority mail flat rate is more reliable than ever. and with improved tracking up to 11 scans, you can even watch us get it there. ♪ ♪ [ male announcer ] the parking lot helps by letting us know who's coming. the carts keep everyone on the right track. the power tools iroduce themselves. all the bits and bulbs keep themselves stocked. and the doors even handle the checkout so we can work on that thing that's stuck in the thing. [ female announcer ] today, cisco is connecting the internet of everything. so everyone goes home happy. [ male announcer ] if we could see energy. what would we see? ♪ the billions of gallons of fuel that get us to work. ♪