Daisy Ridley has no recollection of coming to the aid of a van driver when their vehicle "flipped" in front of her.
The 'Star Wars: The Force Awakens' actress admitted she "panics" in times of crisis but can also be quite "logistical" and helpful, even if she's just operating on autopilot.
Asked what she does in a crisis, she told The Guardian newspaper: "I panic. I’m someone who outwardly doesn’t seem to be panicking and inwardly is panicking a lot. I tend to be pretty logistical.
"One time, I witnessed a really terrible thing on a motorway. A van tyre blew out and it flipped in front of me.
"When I came to, I had my hazard lights on and I’d called the police, but I don’t remember having done that.
"So I feel like I’m actually quite logistical in a crisis. Then, afterwards, I cry."
The 32-year-old actress has also saved lives by being part of a CPR (cardiopulmonary resuscitation) training video, and even though it was uncomfortable to film, she's proud to have been a part of it.
She recalled: "It’s an interactive video where someone has collapsed, I give them CPR, then there are talking points.
"I remember it was absolutely freezing in Covent Garden flower market and we were knee-deep in water because it had been raining.
"But if being part of a CPR training video has genuinely helped to save someone’s life, that’s pretty amazing.
"The same year, I almost choked on a throat sweet in an episode of 'Casualty' after a ghost train had a terrible crash at the funfair. Apparently, it was the scariest ghost train in the UK, so they just filmed us going round and round, which was terrifying. And that was before I nearly choked to death."
Daisy has teamed up with her husband Tom Bateman for her latest movie 'Magpie', for which he wrote the screenplay from her original idea, and in which she also plays Annette.
And the pair - who both serve as producers - had a "great" time working together.
She said: "It was great because we share a very similar creative sensibility in terms of films we love and the film we wanted to make.
"The idea was to explore how quickly intimacies are built on film sets, which is true.
"But the way we tell the story is absolutely not indicative of anything that has happened to either of us."
