Breathless!?

Yes, without the dialogue though

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The final scene certainly has similarities as they both lie on the ground.
Both Fred & Belmondo have a similar joie de vivre - amoral, living for the moment; both high on style

...Ok, so now I really have to finally watch both À bout de souffle, and Kontroll...

there's a highway that is curling up like smoke above his shoulder

I watched Subway first and then Breathless.
I really think these two movies are very related. I thought of Subway as a follow up of Breathless transferred to the 80s. The main characters Belmondo/Lambert are very similar. The 80s version has developed a message though.