Amazon has rolled out its Rivian-made electric delivery trucks to their second city, with the custom EVs continuing to stick to California for the moment. After buzzing into action in Los Angeles back in February, Amazon has now expanded the fleet into San Francisco, where it will face some very different challenges.

Biggest of those will be the sort of terrain the EVs are facing. San Francisco and the Bay Area in general are notorious for their hills and sharp inclines: Filbert Street is the steepest, with a massive 31.5-percent grade.
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