What might work is taking the rear facing seat from a
wolfsburg/caravalle and putting it in the seat closet to the sliding door.
It would have to be in upright position for people to get into the middle
seat, but it might be possible.  I am not sure about the clearance though.
Other list memebers may have input.  Plus it can be removed, extremely
easily, when the entire family is not being transported.

Chip & Stephanie wrote:

> ... or else I will have to sell my van and get a (gulp) large American
> vehicle such as a suburban or club wagon. Why you may ask? Well my wife
> is pregnant with our 6th child, and 6 children plus 2 adults equals the
> need for at least 8 seats.
>
> So, if you know of  such a seat, or where one might be obtained, please
> drop me a line and let me know.
>
> Thanks
>
> Chip Shaner