Sinclair C5 vs modern e-scooters and other lightweight e-mobility is another good example. Same fundamental design approach, but needed another 25 years of imp

Sinclair C5 vs modern e-scooters and other lightweight e-mobility is another good example. Same fundamental design approach, but needed another 25 years of improvement in battery and motor tech. IIRC the first electric car was proposed in the 1920s or thereabouts.