It's been done successfully for motorbikes (gogoro). Nio has swapping stations for cars, but they take over 5 minutes for a swap. Automakers are looking to ma

It's been done successfully for motorbikes (gogoro). Nio has swapping stations for cars, but they take over 5 minutes for a swap. Automakers are looking to make batteries a structural component (save weight), and want to make batteries lower-profile to avoid raising floor higher (otherwise seating position or headroom loses). So removable batteries are a trade-off. OTOH higher-end BEVs can charge to 80% under 20 minutes. So the speed difference is getting smaller, and probably it's easier and cheaper to just roll with charging.