No maybe a Police Officer, but I think in the near future that may well be the case with the MOT. There are moves in a number of countries to standardise the 'MOT' and for that test to ensure that a car still meets it's original Type Approval and that any modifications also have regulatory approval. This is the case at the moment in Germany and I can see the EU adopting this approach for all member countries.
It maybe the case that the mot does get standardised but how would the different road and enviromental laws that are different from one country to another also be standardised, or would we be all forced to adopt German law? Imagine the outcry to that seeing as being anti EU is rather fashionable at the moment...