However, the company is developing new capabilities meant to kick in while doing speeds of up to 40 mph, including the ability to auto-start and stop in slow traffic. Subaru also wants to offer lane switching and auto-steering around bends and curves -- semi-autonomous driving capabilities for highways -- by 2020. It's unclear what features Subaru will be testing exactly, and if they're any of these. All that's certain is that it's joining both big-name and little-known companies on California roads, like NVIDIA, Ford, Good and Baidu.