Escalator Ads - A train wreck waiting to happen...

Gizmodo reports on an interesting new advertisement now on display in a mall in Mumbai, breaking ground into heretofore unused ad space of escalator stairs. It's clever, at least - some dude at the bottom stationary stair shows off a stylish new 'do with each passing escalating stair, showing off the versatility of the hair salon being advertised. The problem is precisely that this ad might work - that is, it might grab the attention of people who are about to get onto the escalator (thereby causing a standstill traffic jam), or of people who just got onto the escalator (almost ensuring a train wreck as they try to backtrack to, you know, really appreciate the ad). So if you see one these things around, check out the ad, get a quick chuckle - but watch out, too!