lol, gg. i always strap down takeout food on the passenger's seat since it's usually in liquid tight containers. but a pot of sauce that just has a lid goes on the floor wrapped in towels.
cars should have a turn and slip indicator like in a plane. that sauce is gonna stay level until you go around a turn. if you turn quickly enough, it's gonna ride up the side of the pot.
the back seat of my truck has a nice stain from sausages and meatballs that i brought in to work a few years ago. one quick turn and it was all over.