This 'O-29' hum is the sound of Ford's new hybrid SUVs

Add Ford to the ranks of automakers adding sounds to notify pedestrians of oncoming electrified cars. The 2020 Escape Hybrid and Explorer Hybrid will both include a custom sound, O-29 (listen to it below) that plays when they're moving at speeds up t…
Source: Engadget | This 'O-29' hum is the sound of Ford's new hybrid SUVs