After the song ended Billy too a step backward to give them both a little personal space. Turning to Laura he made an uncomfortable blinking expression a couple times before gathering up the will to speak.
"Uh, anyway, if you want, since you're new here, if you need a ride somewhere? ...I'm getting groceries?"
The last sentence wasn't actually a question but Billy said it in that fashion to give her plenty of room to reject the offer without sounding demanding or forceful. Not that Billy would have particularly been able to sound demanding or forceful...