The car might be mechanically secure to that speed, but I doubt most drivers are capable of managing, say, lane changes or merging or anything beyond an extremely slight turn at that speed.
I do think there are some places where it could go up to 80 though. Most highways and turnpikes, that would probably be fine.
Because they set the limits when 65mph was the limit of a car being safe, and then never updated them after the fact.
The car might be mechanically secure to that speed, but I doubt most drivers are capable of managing, say, lane changes or merging or anything beyond an extremely slight turn at that speed.
I do think there are some places where it could go up to 80 though. Most highways and turnpikes, that would probably be fine.