>No, it isn't nonsense. Neither are the signs at a mechanic's shop telling you they're not responsible for lost or damaged items.
I'm sure that included in the waiver you sign at the mechanics shop, its included that they are not responsible for lost or damaged items. The extra sign is just to let you know.
The sign on the back of the truck is nonsense because it has no basis in reality. You can't just slap a sticker on your truck and say 'laws don't apply to me'
You can't sign certain rights away. If you sign a contract saying the mechanic isn't responsible for broken or missing stuff and they use that as an excuse to steal, drive recklessly with the door open, not take their gloves off before smearing oil on the upholstery, ..., they can and will be held liable if there's a modicum of evidence.
I'm sure that included in the waiver you sign at the mechanics shop, its included that they are not responsible for lost or damaged items. The extra sign is just to let you know.
The sign on the back of the truck is nonsense because it has no basis in reality. You can't just slap a sticker on your truck and say 'laws don't apply to me'