Hi Termi, no, I tried the card pumps in Auchen and Carrefour Boulogne (after 10pm, ended up getting off the Speedferry at 1am with "6 miles to empty" showing on the readout!) and Super U further South. Not suprised that City Europe does take them though, they would loose to much Booze cruise trade.
Rouen was at about 5.30 on Friday so " Le Rush-Hour" applies, just such a shame there is such a great bottle neck in the middle of a what is now a very efficient road network which is worth paying the tolls for if you on long haul.