It's from the 12th episode of the second season of Breaking Bad. Here is the context:
Walt: Skyler, I'm so sorry. I'm just .... Are you okay?
Skyler: Meet your daughter.
Walt: Hi there, girl. Hi there, Holly.
Ted: Congratulations, Walt.
Walt: Oh, Ted, I'm sorry, I didn't see you here.
Skyler: Oh, Ted drove me here. Thank God. I mean, this little bundle of joy of ours was practically on rails. Halfway here I thought he was gonna have to pull over and deliver her himself.