When I went to collect a hire car in Girona (Spain) I said that I didn't need their extra all-encompassing insurance as I had purchased cover from AXA they said that in that case my mileage would be limited to (a useless) 60km per day whereas with their cover it would be unlimited. If I went above 60 km there would be a charge of 65 cents per km (I think that's what it was) so it could get very expensive very quickly. They also had a 17 euro charge per day for going into France (never charged for doing so from any other company). So I ended up paying them handsomely while at the same time having paid AXA for no risk now on their part. Won't be using Firefly again!