. . . or is it? From the 1980s, in Australia:

Convenient, no?
Perambulators, strollers, and sundry curious conveyances
It’s not a single piece, it’s a genre! Another offering from Shi Jinsong:

This must be the gladiator version. With plans! And blueprints!
Na Zha Stroller, stainless steel, 2005,
Source: Chambers Fine Art Na Zha Stroller, stainless steel, 2005
There’s an artist’s bio here, but somehow I sense that it omits many personal, and relevant, details.
The population of the United States swelled dramatically after the end of World War II as soldiers returned home and began starting families. Ditto for the United Kingdom:

Life magazine reported that, in 1949, this cycle shop’s inventory was nearly 50% greater than in 1948. Yes, a cycle shop was probably where you’d go to buy your pushchair or pram. Now it’s where you go to get your Bugaboo tires re-inflated. What goes around, comes around, eh?
Source: Life archives
Yesterday’s trike too pricey? From Troikar, of South Korea (“actually manufacturing is made in China”):

I’m thinking that the front bar lifts up and back in the stroller configuration. (I’m seeing a handle folded down on the side next to the seat.)
Looks like swivel wheels under that industrial-strength cowcatcher footrest, but are the huge front duallies on the trike, stroller tires? If so, awesome!
Baby seat located between front 2 wheels and possible seat the baby on it. This can be transformed to shopping tricycle, baby stroller, folding bicycle apartly.
450 to 600 USD, FOB Incheon or Busan. Minimum order quantity 200.
Source: Alibaba.com
It’s a stroller! It’s a trike! It’s all things to all men (and women)!. Ah, those wacky Dutch. For a mere $3,000 (USD) or so, you can purchase “continuity”:

For Taga, no location is impossible, no change a hassle. Whether indoors or out, on the bus, train or elevator, Taga is effortlessly transformed to suit any location to offer seamless mobility. We at Taga simply call it continuity. This is the limitless liberty a parent enjoys all day, leaving home with a single vehicle while enjoying quality time with their child at all times.
The Taga converts, seemingly endlessly (and, apparently, without adding or removing parts). True geeks, click on the “conversion” link on the Taga website and click through the process. It’s acrobatic genius!

You ride together to the train station, convert Taga to a stroller and jump on the train. When reaching the central station, you convert Taga again to a bike and ride to the city park.

And that’s only the beginning. Go to the site. You’ll be amazed. Yes, we’re mad about the idea, but, let’s face it, the cost is horrendous, and the utility dubious. Unless it’s your primary vehicle, of course. Then it’s a deal.
Wierdly, there are dozens and dozens of pictures on the site, but there does not seem to be a single uncluttered shot that shows the trike in use, with kid installed, with both front wheels completely visible. There does appear to be a gent in a business suit who is riding in the stroller – but you can’t actually see the Taga in the picture. Go figure.
“Bomo, the world first indoor Robot Baby Carriage.” You need one. C’mon, you know you do:
The smart Bomo which tends the baby at the vicinity of the mother gives pleasure and comfort to the baby, and gives the tired young mother and father a moment of leisurely time to enjoy a cup of coffee.

Bomo has function of cradle, of automatically swing, of automatically maneuvering, and of manual maneuvering. [sic on all those functions.] But wait, it’s not just for parents, and it’s not just for baby:
The young baby can ride it on the Automatically maneuvering mode, and for the more active older brothers or sisters, it has the function of manual maneuvering mode, which uses the accelerator pedal, and steering wheel like a real car. And even in case when the car is going to bump into an obstacle due to the clumsy driving, it automatically stops and backs up. Thus, it never bumps into the obstacles, both in automatic mode and manual mode.
Great family fun! Bumper Bomos, anyone?
$500 each (not sure what currency, but I’m thinking USD), in lots of 100, wholesale.
Ever heard the old expression “when prams fly”? We haven’t either, but Vinnie Garagiulo may have. His pram does fly:
There’s a pilot, of course. The baby’s head is the rudder:
We’re not sure “why”, but now we all know “how”. The pram looks fetchingly intrepid as it sails across the field, doesn’t it?
. . . and it isn’t “Segway” either. Now, we love us some things with wheels, and Segways are cool under some circumstances. I’ve always wanted to take a Segway tour in a new city, for example. That could be way cool, right?
Conversely, a Segway might make things more difficult. Say, if you were pushing your precious little dumpling’s stroller across a four-lane road, could only use one hand on the stroller, and had only one hand left over to control the Segway. Or, if, say, you also had to lean way, way over to reach the stroller handle, while at the same time keeping your rear pushed in the opposite direction as a counterbalance:

Nice work, Mom. I’m hoping it was enough of a pain that you’re using the Segway solo now.
Wait a minute — that’s not a Graco, is it? Please, please tell me that stroller is at least a Chicco! What kind of person buys a $5,000 Segway to push a Graco? Or even a Chicco? We’re not talking about just a matter of taste here. If you’re going to commit this kind of stupidity, you at least ought to have the sense to buy yourself some decent suspension and some nice, air-filled tires to put under that baby.
This photo’s been all over the Internet, but I think I tracked it to its source: seattlest.