Off-topic, but if you wave your arms while chanting and circling your truck twice before getting in, it’ll protect you from asteroids. It sounds ridiculous, but it’s been 100% effective thus far."Kid proofing" is kind of like "asteroid proofing". You can try.
As for protecting the truck from kids, the same technique works, at least when picking them up from school or the movies. Chant loudly enough, and they’ll miraculously find another way home.