NEW YORK -- Toyota Motor's Silicon Valley-based venture capital arm has launched a second $100-million fund to invest in artificial intelligence and robotics technologies, the Japanese automaker said Thursday, in a bid to accelerate its investments in technology startups around the world. The new fund at Toyota AI Ventures will bring the total assets under its management to more than $200 million. The venture capital unit has so far invested in technologies used for automating everyday tasks, providing social companion services, as well as developing electric vertical takeoff and landing vehicles, self-driving shuttles, and autonomous maritime navigation systems.