Image: Unsplash / Donny Jiang A decade ago, smart drivers would always carry jumper cables and maybe a tire patch kit in their trunk. Now, in 2025, I’ve made sure that our vehicles carry two cheap but critical gadgets instead. I now carry a portable, battery-powered jump starter in each vehicle, as well as a separate portable, battery-powered air compressor that can be used to fill a leaky tire. What’s amazing is that some innovative manufacturers are now combining both products into a singl...