A POOR NASHVILLE WORKER, ONE FLAT TIRE… AND A WHITE SUV NO ONE CAN EXPLAIN: The Night Mark Thompson Quietly Helped Blake Shelton on a Dark Road Outside the Opry, He Thought He’d Just Changed a Tire and Walked Away — But By Sunrise, a Mysterious White SUV Was Parked in Front of His Crumbling House, a Stranger Was Knocking on His Door With a Clipboard, and the “Small Favor” He Refused to Take Money For Had Turned Into a Life-Changing Secret Gift That Neighbors Swear Blake Never Wanted the World to Find Out About