Rivian just spun off Also, dropping a $4,500 e-bike with mind-bending tech like pedal-by-wire and 90% regenerative braking. With a 100-mile range, modular swaps, and an Amazon cargo delivery tie-up, this thing’s turning the bike game into a mini Tesla playbook—luxury price and all. Can this high-end gadget trickle down or is it just a rich-people flex?