Minute Cryptic

Our definition here is 'smashing', and our answer will be another word for that.

This clue's indicators are 'about', 'rear', 'after' and 'reversing'. One is a reversal indicator, telling us that the order of the letters in some neighbouring fodder will reverse. Another is a containing indicator, guiding us to place some fodder outside other fodder. There is also a repositioning indicator, showing us the order in which to arrange our fodder. And there is a selection indicator, pointing to an important letter in neighbouring fodder.

This clue's fodder is 'Lie', 'dashcam', and 'vehicle'. We'll use the letters (or some of them) of two of these, along with a short substitute for the other, to construct our answer, as guided by the clue's indicator(s).