Share 'Is it cheaper to drive a natural gas vehicle or a gasoline hybrid???'

Which is the better deal? Driving a car running on natural gas or gasoline? I have heard that it's a lot cheaper to drive a natural gas vehicle. T Boone and others say it's cheaper. But I need more. I need to see the numbers. I posted a thread on the pickensplan website, but didn't get a solid answer. So I set out to find the answer myself. It should be an easy task. I have a mathematics degree,…