SAN FRANCISCO :Aeva Technologies, a firm founded by former Apple engineers that makes sensors used in factories and self-driving vehicles, on Wednesday said it had sold a 6 per cent stake for $50 million to an unnamed strategic partner that will also handle some of its manufacturing in the future. Aeva's lidar sensors help factory equipment and vehicles gain a three-dimensional view of their surroundings. Aeva's version of the technology can also detect how fast objects are moving, which can