It made sense. Pietro considered the options for a moment, but in real-time, it probably looked as if he'd made a snap decision. "Alright. I'll escort you, but foot won't do." Unless Simon was willing to be carried, and even then - Pietro had super-speed, not super strength.
Which left, what? A car? He began scanning the streets for a likely vehicle. "Do you drive? I can keep pace on foot and clear a path for you."