In a heavy bottom pan, add beef. Immediately add lime juice, soy sauce, adobo, oregano, and garlic. Mix well and begin to brown.
Once the beef is brown and still has moisture, add salad olives and tomato sauce. Mix well and allow beef to continue to cook stirring frequently until totally the liquid is gone and the beef is more greasy. During this add the cilantro.
Top tostadas and lettuce cups with beef and desired toppings.