Drive old Hillman and Tesla alternately (5)

I believe the answer is:

impel

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'drive' is the definition.
(I know that drive is a kind of impel)

'old hillman and tesla alternately' is the wordplay.
'old hillman' becomes 'imp' (I am not sure about this - if you are sure you should believe this answer much more).
'and' is a charade indicator (letters next to each other).
'alternately' means one should take alternating letters.
The alternating letters of 'tesla' are 'el'.
'imp'+'el'='IMPEL'

Can you help me to learn more?

(Other definitions for impel that I've seen before include "Goad" , "'Drive, force (5)'" , "Urge or propel" , "Urge forward, drive" , "Spur on" .)

I've seen this clue in The Guardian.

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