Tesla Inc. and Plymouth-based Rivian Automotive are also developing electric trucks. Tesla's Cybertruck is slated for delivery in late 2021. Rivian's R1T is expected to go on sale in late 2020. GM and Ford Motor Co. are planning to join the battle. GM is debuting the GMC Hummer EV later this year and will start producing it in late 2021. A fully battery-electric edition of the Ford F-150 is expected within the next two years.