Quite a bit of design has gone into this Demi Next stroller, by baby products brand Nuna.

This is the base of the system.

The mounting position for the infant carrier is relatively high, to ease eye contact between the pusher and the baby. The angle is adjustable.

The infant carrier can also be attached to face forwards.

There's a pull-out privacy screen…

…as well as a rain screen option.

The basket below is for carrying supplies.

There's an optional flip-out step that a child can stand on.

The infant carrier can also be swapped out for one of the company's bassinets.

There's also an option to add a second infant carrier down below, but I'm guessing something about this isn't ideal; none of the marketing photos show the stroller with both carriers occupied.

Lastly, it folds down compact for storage.

The stroller weighs 26 pounds, and can reportedly carry 50. It runs $950.