If an all electric car like the Tesla can be re-charged in 3.5 hours to achieve a 250 mile range, with no top speed limitations, why cannot plug-in hybrids use the same battery system to get past the 3 mile range limit in its electric only mode and the 30 mph top speed when operated in electric only mode?

It seems to me the battery technology must already be here if electric cars can have it, what am I missing? Why cannot we get plug-in hybrids manufactured now?

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