Diesel petrol is from the green pump in the US and unleaded the black pump. The reverse of Europe, so be warned. Speed limits are generally lower, so donít be caught out, and at crossroads with no lights, the rule of thumb is that he who gets there first, crosses the junction first. Donít even hesitate to get a GPS with your car rental. And slow down in towns. Local people do, so even if you are passing through, respect their slow, safe ways.