Rivian will need help to succeed, and it might have just gotten some today.Investors pushed shares of Rivian Automotive (RIVN 2.03%) higher by as much as 5% Wednesday morning. Two news items released today were interpreted as tailwinds for the electric vehicle (EV) maker. Rivian shares pared those gains as the market pulled back from the morning's highs, but they remained higher by 2.2% at 1:05 p.m. ET.Investors received a positive data point in the fight against inflation this morning. That could lead to m ...