@Hawkwinter yeah but an A/C - even a tiny one - is quite heavy so the best option would be to use existing parts for #Microcars, #Scooters and #Motorcycles, only nerfing the output at the wheels to comply with regulatory restrictions...

Personally I'd love to see one using like a methanol fuel cell for absurdly high range, low consumption and acceptable price...

But I'd also not be surprised if the cheapest option is like a 50cm³ two-stroke with integrated mixing unit to make it a scooter.

To be fair, while the majority of the projects I find are from Germany, it's not just them. Here's a vid from UK - and if I didn't have millions of projects already I'd start a build myself.
https://youtu.be/vOr8EpGdAtQ
#PiaggioApeRV #camping #MicroCars

Thanks to YouTube and an interest in A. micro cars, and B. camping I've discovered that Germans has remodelling Piaggio Apes (teeny tiny three wheeled trucks) into RVs as a hobby. I shouldn't be surprised since it seems like Germans + camping =❤, but... it's Piaggio Ape!!!
#PiaggioApeRV #camping #MicroCars
https://youtu.be/zCG3IsgHP-g