Never drove a car at 140. Highest I got was 136 in a 1984 Nissan 300ZX Turbo.
It felt stable and controlled and I was pushing it faster when the electronics shut down. Tach dropped to zero ..no go at all. coasted down to around 110 and it all lit up again... Seems there is an limiter that shuts it all down at over 136.
Was in the same neighborhood with a 1996 Camero Z28 and it felt too squirrelly at 110 to go any faster....
Been in several different rides at around or slightly over that.
A good friend had a '91 Camaro that was originally owned by one of the guys who worked for Morrison-Cook Racing (Tommy Morrison and Jim Cook) when they had a shop in Albany, Ga. They built custom 'Vettes and a few Camaros for 24 hour endurance racing (Daytona, etc). This thing would handle like it was on rails at speeds well over 130. Of course, I think the only thing stock on it was the shell/frame. The front clip was all tubing and the rear was a 4-link. It had a 355 NASCAR engine block with a one-off custom intake and fuel system. Heck, it even had a set of one-off GM aluminum wheels that the builder traded for something to a guy who worked for GM R&D. Talk about a sleeper, he never did put a good coat of paint on it...it was mostly primer.....and the Mustang 5.o guys fell for it every time.
Now my S-10 was built for straight-line running mostly (it was my daily driver for 4 years, though). It would roll the hides at 85 mph when it shifted into 3rd. It would run faster than 140, but I never red-lined it because it would start getting light on the tires at that speed.
I do miss those days.