Volvo’s been bullish about self-driving vehicles, but it’s much more coy when it comes to electric cars. The company’s latest XC90 has a hybrid edition, and there’s an existing V60 plug-in, but nothing fully electric. Finally, the Swedish auto-maker is ready to go all in, confirming an all-electric vehicle will go on sale in 2019, plus plans to offer hybrid versions of every car in its range, alongside a new “series 40” range of smaller…