Car seats in question

The authors of Freakonomics published an interesting (and thought-provoking) article, "The Seat-Belt Solution," in yesterday's NYT Magazine about the effectiveness of car seats for older toddlers and young children.
Wouldn't it be nice to not have to worry about bringing the darn car seat on vacation. Or moving it to another mama's car to ride together? Seems to good to be true....but wouldn't it be nice.

Thanks to C. for the hot tip!

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