California, NHTSA lawsuit; Karma GT; Canada tax credits; self-driving mpg: Today’s Car News

2019 Nio ES6 Razer Night ExplorerCalifornia filed another lawsuit against the Trump administration over proposed fuel-economy rules, this time about fines. Karma plans to show off its GT by Pininfarina coupe at Monterey Car week this month. New federal tax credits in Canada have boosted EV sales in the country, the government says. And a new study by Volvo hints at how much fuel...