Tesla. I would call it the Model Z

Jaguar.

Aston Martin



And Apple

Maserati and Mercedes. The AMG GT is not a super car

I think Lexus could make a really amazing supercar. The LFA was amazing, but now that it has ceased production, they are in need of something. And not a limited production run, either...

I personally don't see a ton of companies that /need/ supercars in their lineup.

Maserati would be nice, but that'd be dangerously close to Ferrari territory. Aston Martin hasn't really ever been one for supercars it would appear, as they've focused more on GT cars. Honestly I think the only company that I'd like to see a true supercar from the most is BMW. After the M1 ceased production, they've never refilled the void that it left in their performance lineup.

I definitely agree with BMW, I just don't see them making a car that costs any more the i8 anytime soon.

Audi-It'd be interesting to see what they could do if they made a car one or two levels above the R8 in terms of performance.
Jaguar-I really like jag, so it's be nice to see them make an updated, modern XJ220.
GM-The C7 corvette is a lot performance for a relatively low price compared to the competition, so I can't even imagine what they could make if their top sports car was at the price of an Aventador or even a 918. But this is probably the most unlikely of the three.

Jag did have the Jaguar C-X75 which was going to be a hyper car but they decided not to put it into production.

Peugoet

what about the sls and the sls blackseries for Mercedes

and for Maserati the mc12

I want to see what a Lincoln supercar would be like, let alone a sports convertable.

Out of production. The MC12 is over 10 years old now. I say Maserati takes the technology from the Laferrari and puts it in a super car. Kinda like the Enzo and MC12

Lincoln's car would basically be a yacht with a huge engine.

Bentley, and I wish Bugatti (I know, already a supercar/hypercar maker) would make a new car, the Veyron is getting old.