The Rivian R1T and R1S you see above might look pretty much the same as before, but don’t be fooled. Say hello to the “second generation” of Rivian’s electric truck and SUV, a mid-cycle update on the styling front but a comprehensive overhaul of pretty much everything under the skin. After driving the whole “Gen 2” lineup on the roads around Seattle, off-road at DirtFish rally school, and on the drag strip at Pacific Raceways, it’s clear Rivian’s designers and engineers were f...