I have a bunch of those WW2 mats I got back when our access way was muddy in the winter. For cars you only need to lay down two strips, no need to cover the whole width of the road. They're not so hard to find in the French countryside. Some people bring them along on their 4x4s when they make excursions in the winter.
If anything, food should be more expensive. Current prices do not represent the cost of production, hence subsidies. The consequences are nefarious: farmers spending their entire career paying off debt, half of produce ending up in the trash, underpayed immigrants working in agriculture, cheap imports (subsidized by the origin country) putting pressure on local producers...
Food is literally something we cannot live without. It should be valued accordingly.