Probably much cheaper than installing tanks in the ground and pumps on the surface to handle gasoline. Not to mention remediating the site when the tanks eventually start to fail.
There's an old service station near me. It was once a fuel station, but was eventually turned into just-a-repair-garage. Transmissions, mainly. But they didn't remove the tanks when the locale switched gears. That garage is now defunct; there are potential entrepreneurs who want to use the space, but the cost of removing the old tanks and cleaning up the site for alternate zoning (one of the people looking at it was thinking about opening a cafe) is going to be prohibitively expensive.
