Firstly putting the ATMs in public places will attract more attention to the notion of owning gold and people will consider whether it will be worth buying or not
In 1 gram lots it becomes a very tradeable and exchangeable commodity where ever it will be accepted and therefore could in itself become the second medium of exchange being also interchangeable for currency.
Germany has recently sought to have it's gold reserves vaulted in London repatriated back to Germany.
I make no real implications here but I see Angela Merkel as perhaps one of a few leaders in the G20 with their heads screwed on