Why would it save gas? In neutral, base rev has to be maintained, in gear the ECU can completely cut off fuel supply.

On topic:
Vision check for driving license costs CHF 10.50 at Fielmann in Zürich (Bahnhofstrasse 83, 1 minute on foot from HB)
The photo machine takes acceptable photos for CHF 8 in the basement of SVA Zürich.

These happened yesterday. (my 12-month expires today )