When we were at the Honda dealership here in Chattanooga, there was (and probably still is) one of those S2000's sitting in the showroom. A two-seater, just the thing for a family with 1 child and another on the way.
I mean, there is a perfect spot just behind each seat where a child safety seat would fit just perfectly. Of course they would be sitting on the trunk of the car, strapped down to the "roll bars" that are behind each seat, and the wind draft created would reduce the miles per gallon ratio, but other than that, it would be just perfect.
(Beautiful car, by the way).