Vehicle about to appear on right (3)
I believe the answer is:
car
'vehicle' is the definition.
(I know that car is a type of multi-track vehicle)
'about to appear on right' is the wordplay.
I cannot quite understand how this works, but
'about' could be 'ca' (abbreviation for circa) and 'ca' is found in the answer.
'right' could be 'r' (common abbreviation) and 'r' is found within the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for car that I've seen before include "Vehicle carrying vehicles" , "Wheeled vehicle" , "saloon perhaps" , "Hatchback, say?" , "Automobile" .)