Can anyone confirm that the helicopter flying over the underpass was actual flying and not VFX or a chopper on a trailer?
There are claims that the stunt pilot flew under (twice!), but it seems like no amount of skill could avoid weird uncontrollable effects from rotor wash.
I saw claims for that in multiple sources. I think they initially wanted to do CG but it was too hard back then so the pilot did it anyway.
https://nedhardy.com/2023/02/12/terminator-2-helicopter/