Home Air Taxi, UAM/AAM UAVOS presents concept SumoAir urban air taxi UAVOS presents concept SumoAir urban air taxi 21 Aug 2020 | Air Taxi, UAM/AAMNews UAVOS presents concept SumoAir urban air taxi The all-electric, tandem rotor helicopter concept consists of a five-seater passenger including the pilot cabin that can be attached to either a car or a flight module.