- A 10-oz-gold bet was offered that no non-nuclear electricity-generation technology will surpass the power density of modern heat engines within the next decade, explicitly excluding direct-conversion fusion reactors and betavoltaic devices.  
- Participants compared ultra-light electric vehicles: a 100 km-range, 30 km/h recumbent velomobile was modeled to need only ~750 Wh, deliverable by 80 18650 Li-ion cells (~$80) or 3 commercial LiFePO₄ packs (~€1,080, 12 kg, 2 000-cycle life).  
- ThomasEgi proposed a “differential membrane motor” for zeolite-based systems: two flexible stainless diaphragms cancel atmospheric pressure, eliminating pistons, seals, and lubricants while promising indefinite fatigue-free operation.  
- Zeolite atmospheric-water harvesting was analyzed as a low-pressure pneumatic energy store—1 t of zeolite adsorbs ~200 kg water, storing ~30 MJ (≈8 Wh kg⁻¹)—and as a solar-regenerated water-from-air device using 3A zeolite that “dips” like a bird toy.  
- DIY solar-panel fabrication from eBay “broken” PV cells ($15 per 250 g) was discussed, including encapsulation with heat-shrink EVA and the challenge of integrating flat cells into curved velomobile fairings.  
- Desert algae farming was explored for scalable food and fuel: open-pond algae → krill → fish chains, genetically modified omega-3 strains, and thermal depolymerization to convert any biomass into drop-in butanol compatible with existing gasoline infrastructure.  
- Battery longevity data showed that charging Li-ion cells to 4.2 V instead of 4.35 V more than doubles cycle life (>400 vs ~200 cycles) and that both charge voltage and depth-of-discharge are temperature-dependent, driving interest in modular packs and smart BMS.  
- Supercapacitor–battery hybrids were proposed for EVs: Maxwell K2-series 3000 F, 2.7 V ultracaps (<0.3 mΩ ESR, 9 kA short-circuit) paired with low-cost BYD LiFePO₄ cells (~1 €/Wh) to handle regenerative braking surges while batteries provide range.