I never heard of a Rivian truck but I rode in one yesterday. It belongs to a customer in Big Sur who was tired of driving to town for gas. He plugs it in at home. He paid $70K for the privilege. I think he said 600HP with a 140KW battery bank. I see 0-60 is 3 seconds. You can adjust the ride height and there is a drive motor on each wheel, no driveline. Door handles sense you and swing out. Cameras front and rear, you could drive just watching the center console. Backing up the screen overlays your path according to the steering wheel position. Cross country it was as bumpy as any 4X4. The headlights are truly Fugly! I couldn't drive something with headlights that ugly.