ERA 469, I have a battery cut off switch that is keyed and in a locked location on my car. The car thieves would be hard pressed to get it running without drawing a lot of attention to themselves. The only way around that is to pull up with a ramp truck and then you could be down the road in a few minutes. If the thieves want it that bad they will get it anyway. That is what insurance is for. The risk one takes is worth the fun you will have on the trip. There is no doubt that my car would be safer in my locked and alarmed garage, but what fun is that. If all else fails... park next to the nicest cobra on the trip and the bad guy will most likely steal that one over your car.
Jake