You ever been pulled over and had your car searched randomly? I haven't. If you're not doing anything sus, there's no reason the police would stop you. Even then, there's no reason they'd necessarily open the boot. I have only ever been pulled over once, and that was on suspicion of drink driving - the crazy thing is I'm teetotal. All they did was a quick breathalyser test, then they thanked me for my time and sent me on my way.

I would have to say I quite like those odds. :P And of course, the lesson here is to have a respectable-looking kidnapper...