Saturday Wall Street Journal has a review of the Rivian by Dan Neil where he points out a long list of flaws and bugs.

Neil does admit the Rivian has seldom seen “pickup truck” acceleration, 0-60 in 3.2 seconds on all terrain tires, 3 seconds on street type tires.
60 to 90 mph acceleration “stunning” according to Neil.
7000 to 8000 lbs vehicle weight depending on options