system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] What did Hagrid mean?

When Hagrid came to get Harry from his aunt and uncle, they claim that his parents died in a car crash, to which Hagrid replies:

"How could a car crash kill Lily an' James Potter?"

Obviously, we know that the Potters didn't die in a car crash, but the way he says it implies that not only did they die another way, but that the Potters simply couldn't have died even if they were in a car crash. What did Hagrid mean then?

Possibilities I thought of:

1. Hagrid doesn't know what a car crash is.

2. Hagrid knows what a car crash is, but wizards have increased toughness as a result of their magic, and thus would not die if they were in a car crash.

3. Hagrid knows what a car crash is, but is confidence that the Potters would have used magic to save themselves if they were in a crash. 

4. Hagrid's memory of the Potters is biased by the legends surrounding them already, and thus it is inconceivable that such great wizards could go out in such a way, despite how very possible it actually is. 

5. Hagrid was just insulted that someone could imply that the Potters had died in any other way, simply because of the memory of them and the legends about them.
gpt
Its possible he meant that they didn't own a car, being wizards, and would therefore never be injured in a car crash.

Not to mention that wizards **do** seem to have signifcantly increased toughness as a result of being wizards.  Or else there's a lot of safety magic built into that quiditch field.