On rising trail mostly flog buggy (4,4)

I believe the answer is:

golf cart

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'buggy' is the definition.
(small vehicle used on a golf course)

'on rising trail mostly flog' is the wordplay.
'on rising' says the letters should be written in reverse (in a down clue, letters go up).
'trail mostly' becomes 'trac' (I can't explain this - if you can you should give a lot more credence to this answer).
'trac'+'flog'='tracflog'
'tracflog' back-to-front is 'GOLF-CART'.

Can you help me to learn more?

(Other definitions for golf cart that I've seen before include "Vehicle on a fairway?" , "it carries 9 8 [CLUBS ON COURSE]" .)

I've seen this clue in The Guardian.

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