A typical family with two parents and 2.3 kids could easily make do with one EV and a minivan or SUV. The dad drives the former to work, he can likely charge it there.
The financial payout doesn't make sense, yet, but it's getting close.
Electricity here is about 6 cents per kWhr. A Bolt battery is 66 kWhr capacity good for 258 miles (rated range). That is about $4 for a complete recharge. A Chevy Cruise getting 30 mpg would use almost 10 gallons of gas over that distance, call it $30. If you consider oil changes and brake pads over say 100,000 miles ...
that would be 351 recharges total costing $1400 versus over $10,000 for the Cruise. Add in 10 oil changes and one set of brake pads for the Cruise and it starts to look appealing, if I did the math right.