This vibrant pasta salad combines fun wagon wheel shapes with a rainbow of fresh vegetables. A quick homemade dressing of tomato sauce, Italian vinaigrette, and herbs coats every bite with tangy flavor. Crisp cucumbers, juicy plum tomatoes, and earthy mushrooms add heavy crunch and texture to the bowl. It is an ideal make-ahead dish for summer picnics, backyard barbecues, or simple weekday lunches. Just toss everything together and let it chill in the fridge to let the flavors meld.