Answer: pilein

AnswerCrossword Clue
PILEINBoard en masse
PILEINEnter all at once
PILEINOffer to a bunch of hitchhikers
PILEINOffer from a driver
PILEINEnter en masse
PILEINEnter as a group
PILEINScramble aboard
PILEINFill the SUV
PILEINBoard as a group
PILEINGo for a car-cramming record, say
PILEINOffer to a group of hitchhikers
PILEINEnter all together