Owning a Tesla might be cool, and owning Tesla stock has been very cool for the past few weeks, but investors have to ask themselves if the valuation has reached nonsensical levels when the market capitalization of Tesla now exceeds that of Fiat, Chrysler, Jeep, Dodge, Alfa Romeo Maserati and Ferrari, combined. If you had around $10 billion to hypothetically buy either Tesla or Fiat and all the other brands it owns, which one would you choose? For me, the answer is simple...Fiat. As for the cool factor, yes, Elon Musk and Tesla have it, but so do Enzo and his Ferraris.