Each time we travel in Europe we love to enjoy a picnic lunch or dinner for a welcome change from restaurants twice a day. We're heading for France and will spend some time (no doubt a lot of time) in both the Dijon and Beaune markets for picnic supplies and supplies for our B and B. Does anyone have ideas as to how to keep our purchases cool/cold since we will be driving several hours before reaching our B and B. We have never seen ice packs like we have in the US and have been unable to come up with a good solution to this problem. I would greatly appreciate any feedback.