If I drive carefully that 10 miles is the difference between "no fear" & a good run for my Aux, depending on which it is!
As you say refuelling not a big problem (and I carry 82L - and could borrow another 60L capacity for the trip) so I'm not worried, but best to be safe, as you know how many "amazing top speeds" have been claimed here as a result of genuine Nautical / Statute / Km mix-ups.
Again, just for planning (i.e. check the ones I have in my GPS are still valid!) , where are they?