One of the redeeming features of French service stations is that they almost all sell a good selection of local products. At the aire Les Volcans d'Auvergne on the A71 just north of Clermont Ferrand, however, they go overboard selling giant packs of dried mushrooms, industrial-sized jars of potée, Puy lentils (of course) and all manner of weird and wonderful liqueurs and eaux de vie. But the main attraction is a full-blown cheese counter where you can buy the Auvergne's many excellent cheeses.
On Thursday as we were passing through there were whole Saint Nectaires and piles of garlicky Gaperons, Salers and Cantal, Bleu d'Auvergne and at least half a dozen goats cheeses. And not just from one cheesemaker. Several local producers were represented.
The only downside in this heat (38°C today) is how to transport them without them deteriorating or stinking the car out. But if you've got tightly sealed cool box and are travelling down to - or back from - the south take advantage.