You could go to the bookstore and get an appropriate map or two pretty easily. Or a gas station. Or join the AAA and get them to put together a TripTik. Or some combination.
Sure it'd take longer than pulling up directions on your phone does now but if you're planning a cross-country trip to kidnap someone and beat their passphrases out of them or demand a ransom from their family or whatever then you've probably got some other plans to make. If it's a total impulse then you just grab your duct tape, chainsaw, masks, and continental-scale road atlas and hit the road; when you get to your target's state you can pick up maps that'll get you to their place at the first gas station you hit. Don't make jokes about why you're on a road trip when you stop at the whimsical roadside attraction shaped like a dinosaur, someone will come forwards when your case makes the news.
Sure it'd take longer than pulling up directions on your phone does now but if you're planning a cross-country trip to kidnap someone and beat their passphrases out of them or demand a ransom from their family or whatever then you've probably got some other plans to make. If it's a total impulse then you just grab your duct tape, chainsaw, masks, and continental-scale road atlas and hit the road; when you get to your target's state you can pick up maps that'll get you to their place at the first gas station you hit. Don't make jokes about why you're on a road trip when you stop at the whimsical roadside attraction shaped like a dinosaur, someone will come forwards when your case makes the news.