Cool, but to me it seems like a marketing ploy more than anything. Very Portland, though!!
In my neighborhood (probably everywhere?) they are required to turn off the truck when it is unoccupied. So, for the Holidays they just toss an extra guy in every truck who can run to the door with the package, and the driver can stay in the running truck and cue up the next package.
always makes me wonder who the vendor is who supplies starters to UPS!