ASAP service for technologically savvy and comfortable people who are smart enough to keep their phone charged, taxi will never beat Uber. But they are getting better, as more and more companies are going online with apps.

But if you still use a flip phone, or a landline, or you need the waitress or desk clerk to call for you, or your battery is dead, or you don't have room on your phone, or you just feel better about paying cash for simple transactions, then Uber and Lyft cannot help you.

If Uber and Lyft succeed in destroying the conventional cab model, it is going to suck for a lot of people.