Outside of some vollie EMS services where people are authorized to respond directly to the scene in their POV I would never carry patient care equipment in my car. As someone has and will continue to stop for the occasional nasty looking car accident with no emergency responders on scene, I still take the stance of "I'm off duty" when it comes to actually caring for people. I'll stop at a fresh rollover accident or something where there's a lot of damage or people still in cars but that's only because I personally feel like it's not an issue of whether or not I'm a paramedic, but rather I'm a person who has some knowledge of what needs to be done and can keep my shit together. Whereas the rest of the bystanders may be frantic and/or giving bad advice to people. I figure if I'm the one that calls 911 I can at least give them an accurate description of what the accident is, where we are, and a reasonable accounting for number of patients. And maybe have some patient info for the responding emergency personnel. Again, not because I'm Ricky Rescue and want to play paramedic, but more or less because it's just good manners to help your fellow man. That being said if there's any emergency vehicles already on scene or (Any cops, EMS, state run "roadside helper" trucks) I won't stop, and there's a few other circumstances where my goodwill runs out. I also don't necessarily look down on the medics that won't stop off duty because of various, valid concerns like traffic safety, unsafe scenes, potential unruly drivers. We work a job like anyone else, and while we do a different kind of work, I see their point because no one is looking down on accountants for not accounting on their time off. Or garbage men for not doing garbage man stuff off the clock.