Find My iPhone couldn't get a lock on his phone at all -- it was either off or out of data range. The next day at lunch he finally got a delivery confirmation message from me.com, which kicked off a wild, dangerous chase into the wilds of Chicago. We won't spoil the ending for you (he finds the iPhone), but Kevin does raise a couple good points about the service functionality: you need to pull up MobileMe on laptop to use the service (instead of perhaps another iPhone), movement updates aren't pushed, ringer volume impacts alert volume whether the phone is on vibrate or not, and there should be an option for controlling the phone in more nefarious ways like taking pictures. We're glad it all ended up well, but those moments of Lego bliss that Kevin and his friends missed out on are gone forever.
[Thanks, Tristan W.]