Car Seat Contraception?

Question: How are children's car seats a form of contraception that has causes over a hundred thousand babies not to be born? Can't figure it out? Listen in for the answer.

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Sam Peltzman on mandatory seatbelt laws:
https://www.econtalk.org/peltzman-on-regulation/

Jordan Nickerson and David H. Solomon on car seats as contraception:
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3665046