Message taxi, say, after long drive (9)

I believe the answer is:

cablegram

'message' is the definition.
(I know that cablegram is a type of telegram)

'taxi say after long drive' is the wordplay.
'taxi' becomes 'cab' (synonyms).
'say' becomes 'eg' (both can mean for example).
'after' means one lot of letters go next to another.
'long' becomes 'l'.
'drive' becomes 'ram' (RAM drive on a computer).
'eg' after 'l' is 'leg'.
'cab'+'leg'+'ram'='CABLEGRAM'

(Another definition for cablegram that I've seen is " Urgent message".)

I've seen this clue in The Daily Express.

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