2021-05-10 [☆] https://usa.dahon.com/products/mariner-d8-brushed
bicycle

2021-04-30 [☆] https://www.downtube.com/8h-internal-hub-belt-drive-folding-bike/
Too heavy - 14.2 kg even without pedals.
bicycle

2021-04-26 [☆] https://www.sun.bike/product/shortcut-3-670296
Reported to fit through baggage door of a Mooney even with 20" wheels. Brake in the rear hub.
bicycle

2020-09-04 [☆] https://us.brompton.com/bikes/brompton
$1500 for 2/3-speed
bicycle tmp flying

2020-09-04 [☆] TOKYO Citizen Bike 16
weight 32 lbs, rider max 220 lbs
bicycle tmp