Small motor vehicles bother gliders on a regular basis (7)

I believe the answer is:

buggies

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'small motor vehicles' is the definition.
'buggies' can be an answer for 'vehicles' (buggy is a kind of vehicle). I'm unsure of the 'small motor' bit.

'bother gliders on a regular basis' is the wordplay.
'bother' becomes 'bug' (I've seen this in another clue).
'on a regular basis' means one should take alternating letters.
The alternate letters of 'gliders' are 'gies'.
'bug'+'gies'='BUGGIES'

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I've seen this clue in The Guardian.

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