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Comment by dredmorbius

Speed is comparatively easy for electric propulsion -- on land (Tesla) or air (here).

Range is quite another issue. A Cesna 172 has a 1,289 km range, four times the Rolls-Royce prototype, and carries more than just the piolot and fuel.

https://en.wikipedia.org/wiki/Cessna_172#Specifications_(172...

For both land and air, total payload is another hard limit. Tesla achieves admirable results for a passenger vehicle by using high energy/volume and energy/mass batteries integrated into the vehicle structure itself. Battery EV trucks have had range limits of measured in single-digit kilometers. Their fuel-based counterparts exceed four digits (1,000 km). Accellerating, decellerating, and managing mass costs joules.

parent dredmorbius 6 years ago

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