CHARLOTTE, N.C.–(BUSINESS WIRE)–Whistle Express, a leading brand in the rapidly consolidating car wash industry, is significantly expanding its portfolio in the Carolinas with the acquisition of Fins Car Wash, whose 15 locations will be converted to the Whistle Express brand. The newly acquired washes will more than double the brand’s presence in South Carolina’s Greenville-Spartanburg and Charleston markets, as well as North Carolina’s Triad, Raleigh and Wilmington regions. Whistle will now