The Arc One is an electric boat with a battery pack three times the size of Tesla's

Electric boat startup Arc revealed new images and a video of the pre-production version of the Arc One, a 24-foot-long vessel with a massive battery pack and an elegant design. The company has raised $30 million from a group of prominent investors that include Will Smith, Kevin Durant, and Sean "Diddy" Combs. The company has already tested an early prototype, and the reveal of its pre-production version is meant to send the signal that the company is getting closer to customer deliveries, which ...