Our mad racer dashed in heavy vehicle (8,3)
I believe the answer is:
armoured car
'heavy vehicle' is the definition.
'armoured car' can be an answer for 'vehicle' (I have seen 'Military vehicle ' mean 'armoured car' so perhaps 'vehicle' could also mean 'armoured car'). I'm unsure of the 'heavy' bit.
'our mad racer dashed' is the wordplay.
'dashed' is an anagram indicator.
'our'+'mad'+'racer'='ourmadracer'
'ourmadracer' anagrammed gives 'ARMOURED CAR'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for armoured car that I've seen before include "Military vehicle" , "Heavily-protected vehicle" , "Reinforced vehicle" .)