Your hunting rifle will also go through a cybertruck. Its side panels are proven on video to stop fat and slow handgun rounds like .45 ACP. I would bet pretty good money that if I took a 1911 chambered in .45 ACP and shot the doors of a 1970s steel monstrosity of a passenger sedan it would also dent and not penetrate the doors.
Heavy and thick metal doors stop slow bullets. Hurray for elon the inventor!
My '72 Dodge has the usual thin steel body panels. The panels are quite light if you remove all the stuff attached to them. I have no faith it will stop a round, and I'm not going to try it!
I.e. they are light enough to be body armor, but if they blocked bullets people would have been using them as armor for a long time now.