Awesome 3-Ingredient Crock Pot Shredded Beef Tacos

lean bottom round roast (or you can use chuck or rump)

to 12 ounces Coca-Cola Classic

*7 oz can Chipotles Peppers in Adobo Sauce (you will need 2 to 3 pepper finely minced and 1 to 2 teaspoons of the sauce)