EV companies like Rivian are still facing a state-by-state fight to sell their cars without third-party dealerships. Jeffrey Greenberg/Universal Images Group via Getty Images EV makers want to sell their cars directly to consumers without going through franchise dealerships. A patchwork of decades-old state dealership-franchise laws restricts the direct-to-consumer model. Three EV makers told Business Insider how those laws complicate the buying process in some states. As EV sales slow down, EV makers have a growing incentive to make their cars easier to buy. Rivian, Lucid Motors, Scout Motors, and other EV makers say they still face a barrier across much of the US: state dealership-franchise laws that restrict where and how they can sell directly to consumers. These laws, largely written decades ago, govern the relationship between traditional automakers and their franchised dealers.…