Eddard Stark already knows that winter is coming
Winter is coming to the Europe and we believe that this could be the reason for Bollore presenting some Bluecars with added warming material on the exterior.
Weather forecasts are not as bad as in the Winterfell, however if you're running Lithium Metal Polymer batteries that need to be constantly above 60°C, then the added material might come in handy.
In the previous season, fashionable was the grass bedspread, but trends are always changing in Paris.
Unfortunately, a sword to cut off a frozen charging cable isn't standard.