Get a free ride seeing problem with increase (5-4)

I believe the answer is:

hitch-hike

'get a free ride' is the definition.
(to hitch-hike is to ride in someone's car)

'problem with increase' is the wordplay.
'problem' becomes 'hitch' (I've seen this before).
'with' says to put letters next to each other.
'increase' becomes 'hike' (hike is a kind of increase).
'hitch'+'hike'='HITCH-HIKE'

'seeing' acts as a link.

(Another definition for hitch-hike that I've seen is " Use one's thumb to go places?".)

I've seen this clue in The Telegraph.

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