Federal officials have approved Cox Automotive Inc.'s $4 billion acquisition of Lake Success software maker Dealertrack Technologies Inc. on the condition that the Long Island company follow through on plans to sell some of its programs to avoid a monopoly. Photo Credit: Newsday Federal officials have approved Cox Automotive Inc.'s $4 billion acquisition of Lake Success software maker Dealertrack Technologies Inc. on the condition that the Long Island company follow through on plans to sell some of its programs to avoid a monopoly.