Crossword Genius

Drove fast like a vampire? (6)

Ross

I believe the answer is:

fanged

I'm a little stuck... Click here to teach me more about this clue!

'drove fast' is the definition.
The definition suggests an adjective which matches the answer.

'a vampire?' is the wordplay.
I cannot quite see how this works, but
'a' could be 'an' and 'an' is found in the answer.
This explanation may well be incorrect...

'like' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.
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