Where bad drivers end up, due to ingesting drug (3,5)

I believe the answer is:

the rough

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'where bad drivers end up due' is the definition.
The answer is a location as well as being a singular noun. This is suggested by the definition.

'to ingesting drug' is the wordplay.
'to' becomes 'through' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'ingesting' indicates putting letters inside.
'drug' becomes 'e' (E is another name for ecstasy).
'through' going around 'e' is 'THE ROUGH'.

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I've seen this clue in The Guardian.

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