Preheat oven to 425 degrees. Slice bread and put aside. In large bowl combine eggplant, zucchini, squash, olive oil, salt, pepper, basil and garlic. Place vegetables on a baking sheet covered with foil and bake for 30 minutes. Place lettuce on bread and top with roasted vegetables. Add mozzarella and tomato. Drizzle vinegar over sandwich. Serve.