Road rage, it seems, is just an illusion (6)

I believe the answer is:

mirage

I'm a little stuck... Click here to teach me more about this clue!

'it seems is just an illusion' is the definition.
The definition suggests a singular noun which matches the answer. I also know that 'illusion' relates to this answer.

'road rage' is the wordplay.
'road' becomes 'MI' (resembles M1 motorway).
'mi'+'rage'='MIRAGE'

Can you help me to learn more?

(Other definitions for mirage that I've seen before include "Optical illusion caused by atmospheric conditions" , "vision" , "illusory thing" , "Hallucination caused by hot air" , "It doesn't exist" .)

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.