Drain juice of vegetables, reserving 2 Tbsp juice. Chop them small.
Combine juice, vegetables, olives, garlic and oil.
Horizontally split loaf of bread. Hollow out the inside of the top half, leaving a 3/4 inch thick shell.
Top the bottom half with lettuce, meat, cheese, and tomato. Sprinkle the tomato with pepper. Stir the vegetable mixture and mound it on top of the tomato. Top with the top half of the bread and slice into six portions.