When I am in hill climbing gear, I turn more revolutions on my pedals than the tires turn. The higher that ration (pedal turns:wheel turns) the 'easier' it is to pedal, but the more turns you need to go forwards.

A bike that is a 1:1 'fixie' would indeed struggle with hills like the OP suggests. However, this bike has a secret hub within the wheel that does gearing, so you have (iirc) 3 ratios you can use to get up to speed or climb hills.

Are there many of this configuration? (Load in the back as a tricycle). I see lots of good cargo bikes (and I LOVE cargo bikes), just not many of this design. But facebook doesn't let me browse much without an account.

I'm across the strait in Malmö and it's very rare to find the cargo in the back. Mostly senior citizens ride a variant of this bike with two wheels in the back, a small pannier. Maybe because it suits their balance better.

But recently a coffee bike has been turning up here in Malmö with a classic 50s design just like the Cycleauto one, but the wheel is not mounted under the rider.

https://gastro-bike.com/en/coffee-bike/ This is not it but it's close. The one we have here is more of a rounded 50s design on the carriage. I don't have any pics.

You are reading it like:

For $595, you get (what nobody else can give you) (for twice the price)

But it should be read:

For $595, you get (what nobody else can give you for twice the price)

Rephrased:

No one else makes a machine that can do what ours does, even if they charge twice as much!