OK...I have a 1999 MCoupe and it has approx. 172k miles...runs strong and no major issues. I have had it since June of 2000. Next year I am in the Market to buy another car...hopefully either an M5 or Lotus Exige. Should I keep my Coupe or trade in when I buy my next car. Will the MCoupe ever be a collector car????....any advice greatly appreciated