Tesla Powerwall: $14.5K for 27 kwh and $2.5-4.5k installation. $6.8K for each 13.5 kwh of Powerwall.

Batteries by themselves not enough. Need inverters etc... You cannot get to the cost of the car by only adding up the cost of gasoline used over its lifetime.

China's and south Korea and Russia have nuclear build costs in the $2k-2.5K per KW range. They make 70% of the world's nuclear reactors.