First electric car using sodium-ion battery has been produced in China. Tech just in infancy - as it scales, it will compete with lithium. As it relies on highly abundant and cheap materials, will make a huge difference
https://www.notebookcheck.net/First-electric-car-with-cheap-sodium-ion-battery-offers-157-miles-of-range-as-it-appears-out-of-a-VW-partnership.697298.0.html