The 2025 Polestar 3 just got cheaper with the addition of a single-motor, rear-wheel drive model to the lineup. Now live on Polestar’s configurator, the rear-wheel drive powertrain drops the 3’s base price to $68,900 with a $1,400 destination charge. That’s down from $74,800 previously, when only a dual-motor all-wheel drive setup was available…