U.S., Dec. 23 -- Rivian Automotive Inc., the electric-truck startup already backed by Amazon.com Inc. and Ford Motor Co., raised another $1.3bn from investors led by T. Rowe Price to support the rollout of its debut vehicles next year.

The funds generated from Rivian's fourth major investment this year boosts the total raised to $2.85bn, reports Bllomberg. The Plymouth, Michigan-based manufacturer said Amazon, Ford and funds managed by BlackRock also participated in the round.

Rivian's latest haul comes as the company is drawing significant interest from businesses wanting to shift to electric vehicles. Chief Executive Officer R.J. Scaringe has spent the last seven years developing a pickup and sport utility vehicle that will be built o...