You not wearing a seatbelt puts other people in the vehicle at risk because your body becomes a massive flying object in the cabin when you are hit that can injure or kill others in the vehicle with you.
Also the person that ties down loads with multiple ropes | straps truckies hitches and stoppers. Not to mention stopping every few hundred miles to check tensions and reset as required.
Loose loads are a pain in the arse and often dangerous.
A soup can rolling loose and jamming up under a brake or accelerator pedal is something that really happens .. and it's no fun when it does.
BTW I wonder why space behind a pedal is still a thing. If I were building a car, I would make it impossible to put anything under pedals, much like you cannot jam anything below a piano key.
