Coming by way of a recent investor conference, Verizon CEO Lowell McAdam has once again been talking about unlimited data plans. This of course, comes as Verizon Wireless did away with their unlimited data plan in favor of tiered plans more than a year ago. The end result here is basically what we have already been hearing from Verizon, which is that unlimited data is not sustainable.

McAdam talked about how the world is moving towards delivering more video and wireless is becoming the center of communication. For this he went on to talk about how unlimited offerings aren’t sustainable. Slightly more interesting though, McAdam compared these plans to running out of gas noting that “if you allow unlimited usage, you just run out of gas.”

He then went on to clarify that a bit by saying how it will be hard for carriers to maintain unlimited plans because the spectrum needed to back those plans is still limited. The unlimited vs tiered argument will likely continue into the future, but for now there are still some plans available. Sprint is one example and they have recently begun promoting an unlimited for life guarantee.

To address this McAdam talked about how Verizon Wireless has a reputation for network reliability and therefor would not stoop to that level. And for those hoping to see Verizon get more competitive in terms of pricing — it doesn’t look like that is going to happen. In fact, it was said that Verizon will never lead on price.

Instead it looks like Verizon will continue down the path of reliability and availability both in terms of network and devices. McAdam touched on how they have a footprint they like and how they are going to continue pressing that advantage. From here, there was also some talk about how he encourages an environment with three or four different mobile operating systems.