God to regularly hoover vehicle after parking (7)
I believe the answer is:
phoebus
'god' is the definition.
(Phoebus is an example)
'regularly hoover vehicle after parking' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'vehicle' becomes 'bus' (bus is a kind of vehicle).
'after' means one lot of letters go next to another.
'parking' becomes 'p' (abbreviation on road signs).
The alternating letters of 'hoover' are 'hoe'.
'hoe'+'bus'='hoebus'
'hoebus' after 'p' is 'PHOEBUS'.
'to' acts as a link.
(Other definitions for phoebus that I've seen before include "Forename of Apollo" , "Greek sun god" .)