You are the driver of an old worn-out truck so don’t expect much of a speed when driving this truck, but the truck can still do its job. Drive as fast and as safe as you can to get into your destination without the cargo falling over. But if you do get the cargo fall over, don’t stop as you can’t anything about it. Continue with your driving.
When you get to your destination, the cargo will be picked up and you the next day you are going to deliver a different set of cargo. As usual, you need to deliver them on time, but this time it will be harder because of the terrain would be much harder than before.