A: When you can put it anywhere. Man, Homeland Security (which now includes the cop in the doughnut shop, don’t forget) is going to love this. Articulated hardshell pods cable locked to public infrastructure? Nah, that won’t cause any problems. Clearly there were no Israelis on this design team. They’ve known far longer than us that anything unattended in a public space has to be treated like a bomb.
The scary thing is I know people who would think this is a great solution to the “Dude, I need to ditch my bag for a few hours” dilemma. But for every one of those people I’m sure there are 100 others who would dial 911.