Modular Power Packs ?

Saw a Tesla the other day (in Oslo) and instantly recognized its Lotus / VX heritage in an electric powered sports. I’ve been driving VX/GM sports for the last 8 or 9 years, so my initial reaction was I’d like one of those. But it’s 3 or 4 times the cost of a petrol-powered equivalent – silly money. But that’s not even the main problem.

Surely too, the recharge problem must be solved. The thing about fluid/liquid fuel is its portability at high power density. Surely electric cars need recharge stations where you pit stop, slot in a pre-charged power pack and leave the dead one behind on charge ?

[Post Note : Are Hydrogen Fuel Cell / Electric drives the answer ? Is the hydrogen mass distribution and tankage practical – answers from California please ? If we use methanol, how do the carbon emissions compare ? What is the eco-balance of hydrogen-production / battery-production and electricity generation ?]

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