A Web site touting Paris Hilton's racy television spot for burger chain Carl's Jr. crashed for four hours as Internet surfers raced to see the seductive swimsuit-clad socialite doused in suds. The 30-second commercial, which features the hotel heiress washing a Bentley and chomping on Carl's Jr.'s Spicy BBQ Burger in a stringy black swimsuit, has generated media attention since hitting the TV airwaves last Thursday. Carl's Jr., a unit of CKE Restaurants known for its male-focused ads and hefty burgers, at the same time launched a special Web site called SpicyParis.com featuring a special 60-second version of the ad....