I would do a Bronco based Lincoln with fixed roof and full lux interior. Like the Navigator but smaller, full BOF and 4x4 capability. Comparable size to Lexus GX, Land Rover Defender, and Mercedes G Wagen. It will print money. 

Comparing cost/ton of a freight train to a diesel highway truck is apples to oranges.

Have you been in a Mustang?

Ummm….. no.

in 2035 lol

Hear me out. A proper Lincoln Continental based on the mustang sedan platform. RWD, with elegant proportions.   The Lincoln l100 sketches looked so good when they actually gave it this long, dramatic hood. What ruined that concept was the decision to give it this short, stub nose look.    Taking this design, and toning it down for production, but trying to retain the striking proportions as much as possible, the road presence would be unreal. Paired with some sort of refined performance hybrid or something else with effortless power. 

2027 is only 15 months away.  I can see it taking some time to get any kinks ironed out and get the plant ready for full-scale production.  Maybe 15 months is a little longer than necessary, but they'll be taking it slow and deliberate to ensure quality and make sure it's ready to go full-bore when the time comes.

Maybe more of a 4 door coupe for Lincoln, with only 4 seats.  Buckets in the rear to give it the more luxurious feel.

What makes you think it would be too small?

I too have felt that adding a Lincoln version would kill 2 birds with one stone - give dealers a sedan they've been wanting, and spread out costs of engineering for a 4-door version of the platform.   What I wonder, though, is how spacious will it actually be?  Will it be roomy enough for Lincoln?   The only other viable sedan option would've been importing the Chinese Zephyr or producing it here.  The former I'm sure is off the table, and the latter is questionable since they can't seem to figure out Corsair, let alone for a lower-priority sedan.