Looks like a series hybrid with a clutch that bypasses the generator for a high-efficiency overdrive gear. It's simpler than the planetary gear system in a Prius, but they must have made the drive motor (equivalent to MG2 in Prius diagrams) bigger if they never combine power from both MG2 and the ICE. Or, that's not shown in the diagram.
I'd recommend picking the story or novel depending on which you can finish in one go. It's gripping and I feel like breaking it up might take away from the experience.
If you want an upgrade check 9barista. Same form-factor as bialetti but it makes an actual espresso with right temperature and pressure. And it even comes with an adapter plate for gas burner.
I also use a moka only when camping (French press and espresso machine at home).
Why it’s great for camping:
1. Indestructible
2. Cheaply found at a garage sale (no worries if it gets lost in a pile of camping gear)
3. Takes up less volume than a French press
4. When camping, everything tastes better. Even “ok” coffee is a luxury
All this to say: a $500 device is a tough sell for camping