Feels pretty polished and intuitive! My only suggestion would be to add some kind of indicator that you need to press a key to read the next message—maybe like a blinking cursor at the end of the dialog box—as I was waiting for it to autoplay. Do you get penalized for shooting the civilian cars?
EDIT: Nice, I see the new indicator for indicating a key press is required after the message ended. Though I think a downwards arrow blinking or displacing up and down is more commonly seen. And I wasn't meaning that being able to shoot civilian cars was a bug; just asking whether shooting them earns you points too.