[nottheengineer]

Because a car that does well on the highway is also equipped for higher speeds. You don't want an engine that redlines at highway speeds so it's geared down, but that means you have headroom. You don't want tires or suspension that run at their limits during normal use either, so you get a car with all the parts it needs to go faster.

[peteradio]

It sounds like you're saying the Jeep Eagle wasn't the greatest vehicle of all time. Almost like your saying that pieces of the interior falling off at speeds greater than 55 mph wasn't a good thing. I guess this is just one of those times we will have to agree to disagree.

[xnx]

Cars already have regulators to control top speed. The change would be to set those regulators to something like 80 mph.