Crossword Genius

Go like a commercial vehicle? (6)

Ross

I believe the answer is:

vanish

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

'go' is the definition.
(I know that go is a more specific form of the action the vanish)

'like a commercial vehicle?' is the wordplay.
I cannot really see how this works, but
'like' could be 'ish' (similar in meaning) and 'ish' is found in the answer.
'a' could be 'an' and 'an' is present in the answer.
A single letter 'v' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for vanish that I've seen before include "Become invisible" , "Go missing" , "Disappear or fade from sight" , "Disappear completely" , "make go" .)

I've seen this clue in The Sun, The Independent, The Telegraph and The Times.
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