Selling Natural Gas Powered Cars

That's what the Wall St Journal was doing yesterday.   They mentioned lightly the major problem with the idea, namely the size of the gas tank.  Compressed natural gas (CNG) is less energy dense than gasoline, so the tank will have to be bigger, a lot bigger.  Imagine a 55 gallon oil drum.  And this is holding pressurized gas so the tank has to be a cylinder, none of those tricky shapes that fit into odd nooks and crannies.   I suppose the stylists will be able to do something, but I'm betting a CNG powered car will look odd, with that big cylindrical tank sticking out somewhere. 

We need some car company ro build a "micro hauler"?

Trouble with nice green small sedans. They won't haul stuff (other than passengers). You can't go to the lumber yard or the second hand furniture store with a Toyota Corolla, cause the stuff just won't fit into the car. Which is why a lot of families buy pickup trucks and SUVs.
We need a small car that somehow accommodates 4*8 sheets of plywood or sheetrock, or a yard sale bureau. Maybe a factory roof rack? Since the stylists declared war on rain gutters many years ago the only roof rack that fits is the ultra pricey Thule rack. I musta dropped $400 on Thule rack and adapter pads over the years. Just trading up from a 85 to a 99 minivan and I had to buy new adapter pads. Surely a factory roof rack (removable) wouldn't be that hard.
Or how about a hatchback with removable seats? Or a lift off roof? or both? Or something else.
What we need is a small 4 passenger sedan, about Corolla size, that lets you haul lumber or furniture occasionally. I'd be OK with leaving the hatchback or truck lid open and keeping the speed down on the way home, just so long as I could do it at all.