A mentor once told me: “You have the best luck when you’re best prepared.” That kind of thinking makes a strong case for a roadside emergency kit that stays onboard your vehicle at all times.
Beware of such kits that hold nothing more than a few Band-Aids and a bottle of water. The best ones will include a mini air compressor, jumper cables (or a self-powered jumper pack), some heavy-duty work gloves, and a flashlight. Here's one example. Zip-ties are a nice component as well. More discreet and durable than ever-popular duct tape, those little plastic cables can make quick work of adjusting “slightly askew” parts that could otherwise cut your road trip short.