Hey <US carrier> how about this idea. Charge me for (.5, 2, 5) GB of data and then let me use it. Let me turn my phone into a wireless hotspot so I can use my

Hey <US carrier> how about this idea. Charge me for (.5, 2, 5) GB of data and then let me use it. Let me turn my phone into a wireless hotspot so I can use my laptop/ipad/tablet/something on the Internet. I wonder how long it will be before one of the carriers start offering this. Verizon and Sprint each offer a portable Wifi hotspot, but you can't share the data with your smartphone data plan (which is usually required). Just put the hotspot on my phone and don't make me pay twice. Yes, I know this is wishful thinking. And yes, I know it's "unofficially available" via Froyo, but it's my impression that this functionality is not officially sanctioned by the cell providers.