At least six people died in Brazil on Sunday after two helicopters collided in western Rio de Janeiro, firefighters said.The helicopters crashed into the car park of an electric car showroom, igniting a fire that engulfed at least 20 cars.A statement from firefighters said initial reports pointed to a mid-air collision, adding “six fatalities have been confirmed, all were crew members of the aircraft involved in the accident”.Rio de Janeiro Mayor Eduardo Cavaliere said there were “foreign...