this can give rise to a new business model: a chain of unmanned gas stations.
Most probable name of a brand:
Pump N' Dump of course.

There have been unmanned pumps for quite some time. They are usually reserved for fleet vehicles, but there are some consumer ones out there. One company (I forget the name, but they are popular in California) have ATM connected pumps that allow you to pay for your gas. Those could easily be retrofitted with multipurpose ATMs.