June 25 (Reuters) - Mister Car Wash Inc was valued at $5.6 billion in its New York Stock Exchange debut on Friday after shares of the Tucson, Arizona-based company opened 26% above their offer price. The company’s stock opened at $18.9 per share, up from its initial public offering (IPO) price of $15 per share. Reporting by Niket Nishant in Bengaluru; Editing by Maju Samuel Our Standards: The Thomson Reuters Trust Principles.