No other car reaches such lofty heights , though the Aston Martin comes close , selling for $ 2,695,000 to Christopher Cox , 39 , a private investor and a Ferrari collector from Chapel Hill , N.C. Bidding for the Kennedy limousine reached $ 575,000 -LRB- $ 632,500 with commissions -RRB- , selling to John O'Quinn , 60 , a Houston lawyer famous for winning big judgments , including a $ 1 billion verdict in May 2004 in a fen-phen diet drug lawsuit . ''