At the end scenes where character Diana Blackwood crash her car, no airbags is deployed in a modern Infinity QX80 SUV.
At the end scenes where character Diana Blackwood crash her car, Stephanie (the biker) approaches the crashed car in rain for a look with the helmet on. Takes the helmet off with the chin strap apparently unlocked. No real biker would do that. Chinstrap would be locked and you would just flip the visor open, especially in rain.