Put a modded road car, or as many as you can, under 1 minute at midfield.
Levels 1 GT-One Road Car, not too hard.
Level 2 R390 Road Car, Zonda C12S. Hard but not crazy hard.
Level 3 Lotus Espirit 350, Ruf RGT, Espirit V8SE. Very hard.
Level 4 Any others possible?
You could probably, fully tuned at least with good cornering and gear ratios since Midfield is pretty high speed, but I think it is possible. The Shelby can possibly do it.Maybe I'm missing something or made a vague post, but I'm pretty sure it's impossible to go sub 60 seconds with any of those cars.