Crossword Genius

In these people may drink and drive (7)

Ross

I believe the answer is:

saloons

I'm a little stuck... Click here to teach me more about this clue!

'drink and drive' is the definition.
I can't tell whether this defines the answer.

'in these people' is the wordplay.
I cannot really understand how this works, but
'people' could be 'loons' (loon is a kind of person) and 'loons' is present in the answer.
The remaining letters 'sa' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...

'may' is the link.

Can you help me to learn more?

(Another definition for saloons that I've seen is " Bars".)

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