John Dingell: “What does that come down to, Mr. Gaffigan?”

Now, again, Ms. Barra, it is also important that all automakers communicate clearly and promptly with NHTSA.

It is a very happy system. It works well. And it has had no controversy that I can recall except one instance.

I look to her and the GM leadership for establishing more responsible and communicative cultures at GM.

A culture that allowed safety problems to fester for years will be hard to change.