The world's largest operator in the luggage cart rental business. Based in White Bear Lake, Minnesota, near St. Paul, Smarte Carte operates in 154 airport locations worldwide. Smarte Carte also has locker operations in more than 226 locations. In October 1996, CHPII sold Smarte Carte to a private equity investment partnership for $113.5 million, achieving a 151 percent compound annual return on its investment.