Can Amazon save $20B per year by deploying autonomous EVs?

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Amazon.com Inc (NASDAQ: AMZN) Delayed: 248.54 -6.44 (2.53%)
Previous Close $254.98    52 Week High $847.21 
Open $253.00    52 Week Low $474.00 
Day High $253.99    P/E 421.25 
Day Low $247.76    EPS $0.59 
Volume 25,409,488       

(NASDAQ: RIVN) Delayed: 14.93 -0.21 (1.39%)
Previous Close $15.14    52 Week High
Open $15.04    52 Week Low
Day High $15.17    P/E N/A 
Day Low $14.80    EPS
Volume 11,364,707