At one end of the spectrum, you've got people who think they know it all and have accidents because they don't look. At the other, people who have forgotten most of it and have accidents because they look but don't see. At one end, people who don't know the limitations of the car they're driving; or they're own for that matter. At the other, people who have reached their limitations and think the car has reached its own as well......normally at about 30 mph. At one end people who drive a Mini as if it's a Jag and at the other, people who drive a Jag as if it's a Mini. 50 mph means just that, it doesn't mean you can do 100 mph in a Mini and it would also be really helpful if you didn't poodle along at 30 mph in a Jag either.