Obviously a prototype but see a lot of DeTomaso or Maserati styling in that, but judging by the Bertone badge on the fender it's most likely a Maserati. Some sort of a Quattroporte prototype?
Looks like an Intermeccanica to me, but I don't know their model names so that's about all I can tell you right now
Semi-correct. It's the 2nd Gen Maserati Quattroporte (AM123), although, it never officially made it into production. About a dozen samples were hand-built before Citroën-Maserati went bankrupt for good. The one and only FWD Maserati ever, it was basically a stretched Citroën SM dressed in Gandini bodywork.
@MrAngry You are correct that it is an Intermeccanica, more specifically the 1969-1970 Intermeccanica Italia Spyder. Yes, I know too much about old, weird cars. Guess this.