My daughter called me, nervous as can be, and said she was in the emergency lane because her steering wheel was shaking uncontrollably from 55 and up. I said to take it easy and I would look at it when she got to my house. To make a long story short I took it out for a spin and sure enough the faster I went above 55 the more it shook. At some point I expected it to smooth out but nope. I laid on the ground and looked up underneath and didn't see anything unusual. I couldn't jack up the car because it's just not safe right now to do so.
Her friend showed up in her Saturn and she had the same problem a day or two ago. Exact same problem. Saturn told her it's not uncommon for this problem when many days in a row are below freezing. Well, I looked again and still didn't see anything unusual.