Rivian (RIVN) shares rose 2.4% after hours on Tuesday as upbeat Q3 results and progress on the R2 SUV sparked retail excitement. The EV maker reaffirmed its 2025 delivery guidance of up to 43,500 vehicles and revealed that the R2 will start at $45,000. Rivian expects up to $2.5 billion from its Volkswagen JV, with $2 billion coming in 2026.