^i also have one of those bike boxes (same looking interior, too). however i wish they would have included a metal floor ring bolted on the inside near the door so i can lock the bike up on the inside too. the bike boxes here in seattle have this rotating lock which imo isn't really too difficult to break (or pick). however my box is in in an area with a bunch of other boxes, and next to a security/parking guardhouse, so i'm mildly OK leaving my bike there without too much worry.