Invisible bike!
"So off we go! Drinks and shoes and a snack." Deanna grinned at her childe and... grand-childe? As long as she wasn't referred to as Grandma, things would be fine.
She rapped on the dark plexi-glass and boldly announced to the driver, "Second star (no pun intented) to the right, Jeeves, and straight on 'til curfew."