Crossword Genius

Picks up and drives, being very careful with (4,2)

Ross

I believe the answer is:

runs in

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'very careful with' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'picks up and drives' is the wordplay.
'picks up' becomes 'in' (I can't explain this - if you can you should believe this answer much more).
'and' means one lot of letters go next to another (I've seen this in other clues).
'drives' becomes 'runs' ('run' can be a synonym of 'drive').
'in' put after 'runs' is 'RUNS IN'.

'being' acts as a link.

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I've seen this clue in the Evening Standard.
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