I just started this job and this guy half my age keeps wanting to give me a lift home what should I do?

So i just started this assembly line job on Monday just to get quick money before I move back home in June. This guy that seems to be a lot older than keeps offering me lifts back home after work I dont feel its appropriate since he's a stranger. Also when I was walk to work he was shouting from his car offering me a lift to on the way to work.
I just started this job and this guy half my age keeps wanting to give me a lift home what should I do?
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