Why don't more elevators have these optimizations? On older buildings at least, I imagine it's because the landlord just doesn't care. I walked by dozens and d

Why don't more elevators have these optimizations? On older buildings at least, I imagine it's because the landlord just doesn't care. I walked by dozens and dozens of emergency vehicles this morning because of this horrible thing: http://cityroom.blogs.nytimes.com/2011/12/14/three-hurt-in-midtown-elevator-plunge-one-critically/ http://cityroom.blogs.nytimes.com/2011/12/14/three-hurt-in-m... My last office was in an older building like that and had a set of elevators that were chronically behaving erratically, so that kind of freaked me out more than it would otherwise.