Don't know of any 4 wheelers, but have a look at the Love N Care Europa pram with toddler seat. It's like the P and T's.
Not sure how much you want the seat to recline, but I think this one reclines enough so that a toddler could sleep in it. It reclines more then a car seat anyway, and they seem to be able to sleep in them!
(I know a great sale with them at the moment, so let me know if you want the link)

Happy shopping!