每小时85英里已经很快了，你们那条路限速多少？这老太太开的得有95或更高。

This reminds me of a joke by Seinfield, not exactly what he said, but here it is：
You know what, I just don't get it why older people tend to drive slower. The speed limit should be set by your age. For older people, they don't have much time left and they need to hurry. So if you are 90, go 90!

LOL.