Uber plans to invest up to $1.25 billion in Rivian as part of a deal to deploy up to 50,000 robotaxis in several countries through 2031. Uber Technologies plans to invest up to $1.25 billion in electric vehicle maker Rivian Automotive as part of a deal to deploy up to 50,000 robotaxis in several countries through 2031, the companies announced Thursday. The tie-up includes expectations... [2461 chars]