I wouldn't spend too much time worrying that something will happen during the day or while out driving. People will smile and wave, you will be fine. I drive my '69 300 conv. everywhere and when I park it there is always a group of admirers 'watching' it for me.

At night, make sure it's in a secure spot, a locked garage is best. If someone really wants it they'll bring a wrecker and tow it. That being said, I do unplug the coil and have a kill switch, and a lot of insurance! Enjoy your trip!