The case of the Saab Calibra is one I'm glad didn't pan out, but I wish the car had made it here somehow. Even weirder than this was a plan to sell the Opel Senator through Porsche dealers in the late '80s, after GM's dealers were uninterested because their lots were full of Park Avenues and didn't need another luxo-barge competing. Strange, too, since the company was willing to sell that car as an Opel until the cost of importing became too strong. That likely killed the math for sending the Calibra here, too.
It had some crazy mechanical issues. At one point it stumbled and stalled because the carburetor had come loose from the intake manifold and I had to tighten it back down! Another time, my brother was driving it and the brakes failed. Somehow the end of the brake shoe that meets the brake cylinder piston had become worn on one side, causing the piston to slip off the end of the shoe when the brakes were applied, losing braking and squirting fluid all over.