[toast0]

> Because security is about having slightly higher security than the other person.

I get that, but I just don't see the security disadvantage of having a 1 cm gap between the top of the glass and the bottom of the window frame; that's what I'm asking about.

[lamontcg]

> And open car window lets someone easily get in without breaking the glass and attracting attention and the cracked open window may give them the idea to try it in the first place.

[brokenmachine]

If the car's locked with the window a bit down, they can't use the handle to get in.

They'd still need to break the glass.