It is unquestioningly accepted at home and widely used beyond the euro area's borders. (Several countries, including Montenegro and Kosovo, use the euro as their currency without formally belonging to the euro zone.) The switch from old currency to new went remarkably smoothly, though consumers in many countries complained, perhaps predictably, that they were charged higher prices as merchants rounded up to new price-points in euros.
Where cities have pollution restrictions, for example, a driver could elect to drive purely on the battery, or to switch to that quieter mode in a school zone.