Gas is nice and cheap right now, but it’s not going to stay that way forever. That’s why, despite the continuation of strong truck and SUV sales, automakers are still working to add electricity into the mix. Volvo’s just announced a very ambitious goal of selling one million electrified cars by 2025. Now, “electrified” doesn’t infer that every vehicle will be a full-on, battery-electric cruiser. That term can expand to cover anything from mild hybrids,…