Amazon invests in electric truck-maker Rivian

It led a $700 million round in the startup.

Amazon is staking a claim in the EV market after it led a $700 million investment round in electric pickup truck and SUV maker Rivian. Other details about the investment aren't being disclosed, but previous shareholders are involved and Rivian is remaining an independent company. Rumors suggested this week Amazon and GM would both invest, but it's not clear if the latter took part in this round. Nor did Rivian disclose how much of the company Amazon now owns.

"We are excited to have Amazon with us on our journey to create products, technology and experiences that reset expectations of what is possible," Rivian's CEO RJ Scaringe said.

Rivian revealed its R1T truck and R1S SUV in November, and shipments are expected to start next year. It's not entirely certain what Amazon's end game is with the investment. That said, it's clearly taking a deeper interest in transportation (which makes sense for a company that has delivery robots) as it also invested in a self-driving car company this month.