Knitting a racing jacket for driver's first knitted jacket (8)
I believe the answer is:
cardigan
'knitted jacket' is the definition.
(I've seen this before)
'knitting a racing jacket for driver's first' is the wordplay.
I cannot really understand how this works, but
'a' could be 'an' and 'an' is found in the answer.
'first' could be 'i' (I in Roman numerals eg Elizabeth I) and 'i' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for cardigan that I've seen before include "town in Wales" , "corgi" , "One making ridiculous charge" , "location of Welsh bay" , "Knitted sweater - Welsh Bay" .)