Uber reports strong Q4 revenue rise but stock drops after cautious future growth forecast.

Uber reported a 20% rise in Q4 revenue to $12.0 billion, with significant contributions from mobility and delivery services. Gross bookings increased by 18% to $44.2 billion, and adjusted EBITDA surged 44% to $1.8 billion. Despite these gains, the company's stock fell after it forecasted mid-teens to high-teens growth in gross bookings and 30-40% profitability over three years. Uber plans to launch driverless rides with Waymo in Austin and Atlanta this year.