@Too fast
Its Chrysler 300C, but guess what it Mitsubishi engine found in Magna, Sigma, Diamante, and guess what this engine is used in The Hyundia XG350, Azera3.5 and there is a 3.8 version too. well it is also used in Kia Opirus/Amanti too.
So all those who mentioned the following names are right in one way or the other, lol!