The New Zealand medical journal
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In this viewpoint we briefly review the evidence for smoke-free car legislation. We find that this legislation has been consistently associated with reduced secondhand exposure in cars with children/youth in all nine jurisdictions studied. ⋯ So we argue that the New Zealand Ministry of Health should invest in a thorough evaluation of this important upcoming public health intervention. This could both help the country in further refining the design of the law (if necessary) and would also be a valuable contribution to advancing the knowledge base for international tobacco control.