Rinse and pat dry the pot roast,then rub with steak seasoning, black pepper and minced garlic on all sides. Center in the slow cooker.
Drizzle the Worcestershire sauce over the roast.
Mix together the coca cola, brown gravy mix until dissolved. Pour over the roast. Cook on low setting for 4 hours. Add in vegetables on top of roast.Season the vegetables with a light sprinkle of steak seasoning or seasoned salt and black pepper to your taste.
Finish cooking on low for additional 4 hours or until roast is tender and easily falls apart. To make the gravy, use a slotted spoon to remove the roast and vegetables from the slow cooker to a platter. Cover and keep warm.
Pour the drippings into a saucepan, skimming any excess fat from the top. Thicken with cornstarch. Serve with roast and vegetables.