From The Cordelian Chronicles:

Two minutes later, Kelly burst through the door, overjoyed to see Sierra still there and not looking much worse. She ran to him and helped him to his feet.

“Come on! We’ve got to get out of here!”

“Did you find a way to headquarters?” the bleary-eyed Sierra managed to ask as she led him out the door and to the street.

“Yes, I stole a car.”

“What?”

“Just shut up and get in.”