It doesn't matter how fast your car is able to go, nor does it matter how good your brakes are. There are certain laws of physics that nothing can overcome. At 60 mph, you are going 88 feet per second, and it is going to require nearly 300 feet to come to a dead stop whether you are in an old Fiat or a new Volvo.
Furthermore, the tires that come on a new car are barely adequate to handle today's (legal) highway speeds.

Then, there's the matter of mechanical failure; on two ocassions, I have had a serious failure. Once the drag link fell off making it impossible to steer. Another time, a tie rod end let go causing the same problem.It was just luck that I was moving very slowly both times.
A friend of mine bought a brand new Buick, drove it 90 mph, came home and the steering linkage fell off in the driveway.

I sometimes drive a 33 foot motor home that weighs 18000 pounds. It will not stop as quickly as a car, so I never drive it faster than 60 mph.Tractor trailers go by me just like they think they can ignore the laws of physics, and I know they are pulling a lot more weight than I.
Then there are those idiots who pull right out in front of me like I wasn't there!