Gas (petrol) in expensive in Europe. 1 gallon can go about 4-5 U.S. Dollars. And some complain that a U.S. gallon is about 2 U.S.D. ...
I wonder if you get used to the ideea of driving on the left. A quiz question: why did British made motorcycles had the gear lever on the right?
As for the licence plates, the British ones, yes, they do have 3 numbers on the licence plate, but they are different from the Romanian ones. They do indicate where the licene was first emited and it what year. In Romania you have the county (41 counties + Bucharest) 2 or 3 digits and 3 leters. This form was adopted in the '90's. In the past, up to '40's or '50's you could have the city instead of the county/region - I do like the ideea.