(Reuters) – Tesla TSLA.O said yesterday it will invest $2 billion in CEO Elon Musk’s artificial-intelligence company xAI – and that production plans for its Cybercab robotaxi were on track for this year. Tesla’s revenue fell about 3% to roughly $94.83 billion in 2025, marking the company’s first annual decline in revenue. Revenue from the energy generation and storage segment rose 25.5% to a record $3.84 billion in the December quarter, trouncing analysts’ estimates of $3.46 billion. Last week, Musk said initial production of the Cybercab robotaxi and the humanoid robot Optimus would be “agonizingly slow” before accelerating over time. On Wednesday, he said Tesla was not expecting significant Optimus production volume until the end of 2026.