nostr:npub1kege95j6dc5ax6wen9w9fm8c9l7w82qyptdleaztekfwmz5sk24qhndjeq both do happen, sadly. But by the time somebody is old enough to drive, I imagine they're too old for trafficking, so the car attachment trick does seem out of place there. Much more likely for theft than abduction.
In the UK, they're abducted pre/early teen and/or coerced into drug addiction when they're still naive and impressionable. Once hooked, they'll agree to anything for another hit, and their dependence makes them less likely to run too.
I hate that i know this 😔