Great stress caused by freight carrier (5,5)

I believe the answer is:

goods train

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

'freight carrier' is the definition.
'goods train' can be an answer for 'freight' (thesaurus). I am not certain of the 'carrier' bit.

'great stress' is the wordplay.
'great' becomes 'good' (similar in meaning).
'stress' becomes 'strain' (synonyms).
'good'+'strain'='GOODS-TRAIN'

'caused by' is the link.

Can you help me to learn more?

(Other definitions for goods train that I've seen before include "supplier on track" , "One running over tracks" , "Rail cargo carrier" , "freight vehicle" , "Means of transporting freight" .)

I've seen this clue in the Sydney Morning Herald.

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.