Roadside farmstands are making a comeback. They have been around forever, more common in some places than in others. Growing up in New England, I saw a lot of self-serve apple stands, but they never provided anything close to one-stop shopping. Today, some of the farmstands where I live are getting pretty close. From a farmer’s perspective, the potential benefits are immediately obvious, especially in comparison to his other available options for marketing the produce grown by his wife and her crew. It’s the shortest commute imaginable. You don’t have to pack and unpack a truck or deal with customers at the market, perhaps in the wind and rain. And if a farmer does make that trek, the stand becomes a place to unload what doesn’t sell. Farmers who sell their produce at wholesale prices to stores, restaurants, and distributors end up doing more work for less money than those …