He said they headed off Valley Boulevard.
2 seconds sound clip from Superman (1948) - A Job For Superman (Chapter 5).
You can hear this line at 00:04:57.614 in the Blu-ray version of the episode.
Quote context
[...]
- Then it was the Spider Lady's men who grabbed Lois.
- Hey!
- Knocked out and how. Blackout.
- When I came to, this Hawkins guy was bending over me.
- Oh, then, you didn't actually see them take Lois?
- He said they headed off Valley Boulevard.
- Well, that's something. Not much.
- Lois was in that car. She was blindfolded.
- Better let me off at the next house. I'll phone the police.
- There's a farmhouse. You let me out here.
- No, you stick right on their tail. Don't let 'em outta your sight.
- Okay.
[...]