Vehicle security for long road trip

^^^

exactly this. if somebody wants it they are going to get it. end of.

i'd wager a guess most vintage car thefts are opportunistic, so really all you're trying to do is dissuade a thief and send them looking for an easier target.

your ride is more likely to get boosted around town where they've monitored your comings and goings and have time to plan. on the road, they're afforded no opportunity.

for a professional who's well prepared and well appointed, most all of that stuff is just a nuisance. they're not messing around trying to start a car, they're coming with a truck.