No one can predict when and where their car's going to break down, unless of course you've familiarized yourself with all these ways you're ruining your car without realizing it.

It's usually a very sudden malfunction that can leave you miles away from help and sometimes even out of cell phone range.

That said, there's a bunch of stuff you should be keeping in your trunk at all times, with no exceptions, that could quickly get you back on the road, and maybe even save your life.

Most important things you should have in the trunk of your car are jumper cables, first aid kit, kitty litter to use on slippery surfaces, spare tire, jack and lug wrench, air pump, tire pressure gauge, hazard triangle/flares, blanket, flashlight, and multi-tool set.