Raced over in vehicle with runners caught fast (7)
I believe the answer is:
snarled
'caught fast' is the definition.
The definition and answer can be both related to change as well as being past participle verbs.
Perhaps they are linked in a way I don't understand?
'raced over in vehicle with runners' is the wordplay.
'raced' becomes 'ran' (running is a kind of racing).
'over' is a reversal indicator.
'in' indicates putting letters inside.
'vehicle with runners' becomes 'sled' (I can't explain this - if you can you should give a lot more credence to this answer).
'ran' back-to-front is 'nar'.
'nar' going into 'sled' is 'SNARLED'.
Can you help me to learn more?
(Other definitions for snarled that I've seen before include "Growled or tangled in knots" , "In a twist - showed one's teeth" , "Knotted; growled" .)