Baidu’s ride-hailing service, Apollo Go, currently operates in 10 Chinese cities. The new vehicle will roll out through that program sometime next year. Once regulators give the green light, the Apollo RT6’s detachable steering wheel will legally be able to come off, a company executive said Thursday. Baidu is hawking its new design as a way to free up space for things like “extra seating, vending machines, desktops, or gaming consoles.” The company said its new self-driving car has dramatically lowered the production costs from previous versions, by about half. Those cost savings will be passed on to passengers as...