Combine marinade ingredients in small bowl and mix well.
Put steak and marinade in a ziploc bag and let steak marinate overnight.
Remove steak from marinade. Grill steak to desired doneness. Remove from grill and let steak rest a bit, then slice against grain into thin strips.
Fill warmed corn tortillas (use two per taco) with steak and top with any or all of: chopped cilantro, diced onions, lime wedges, avocado slices, Pico de gallo then finish with a drizzle of Roasted Chili Lime Olive Oil.