The truckers pull up to the designated truck stop. As they hop out to unload their cargo, onlookers note the curious absence of greasy hats and junk food wrappers.That’s because these ladies drive On the Gourmet, the foods van that turns homes into delivery sites for local, farm-fresh groceries.The proteinsters stock all-natural, grass-fed bison, lamb, and beef. (Release your inner bandit for smoky Virginia bacon and barbecue-ready hot dogs.) They pull out all the stops with Trickling Springs Creamery ice cream (bring on 85 degrees and humid) and are veritable dairy queens with milk, yogurt, and cheese.You can track item availability and place delivery orders online. They also set up shop at several area markets for on-the-fly purchases.They know how to rig a movable feast.Available Sundays, 9 a.m.-1 p.m., West End Farmers Market, 4800 Brenman Park Drive, Alexandria. To sign up for home delivery, go to onthegourmet.com.