Six killed after two helicopters collide mid-air in Rio de Janeiro; video

Six people killed as helicopters collide over Brazil’s Rio de Janeiro

Two helicopters collided mid-air over Rio de Janeiro, killing all six people on board and igniting roughly 20 electric vehicles in a dealership car park. Lithium-ion fires require three to four times more water to extinguish than standard car fires—a critical infrastructure challenge for EV fleet scaling.