Is there anything detrimental that can happen to a car from being upside down?

Like, drivetrain-wise, is there anything to worry about if it has been upside down for an hour or two...

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1982 240D.
My name is Michael, and I am an 18 year old binge-drinkin', cigar-smokin', novel-writin', all around unsavory and unnattractive guy. I tell long-winded stories, and I only shave once a week, although I've had to do it every day since I was 16.