Electric vehicle company intends to sell trucks and SUVs to consumers, delivery vans to Amazon. Rivian Automotive Inc., which is working on electric delivery vans for Amazon.com Inc. in addition to electric trucks for consumers, filed for an initial public offering Friday.Rivian launched the R1T, an electric pickup truck meant for consumers, in September. The company said in its filing with the Securities and Exchange Commission that it intends to launch and deliver the R1S, a sport-utility vehi