I'll repost this here. Quoting myself.
Quote:
1 litre per 100 kilometers = 235 mpg. But this is a PLUG IN hybrid with a 5kwh battery. Thats 60 miles on electric charge alone if it were the VLCE. Moreover it's designed so it uses all that range, (unless it goes above 60mph or the battery is depleted to 20%) before the diesel kicks in. Anyone can just throw batteries at the problem. You can have a plug in hybrid Hummer with a 500kwh battery range of 300miles but gets 9 mpg on gas, call it 309mpg and say its the most efficient car ever. The VW Xl1 maybe the most efficient car currently coming to production, but it does NOT get 1 Litre per 100 Kilometers. It's gonna take alot more to break that barrier.
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