BMW i8 owner, DoctaM3 takes his plug-in hybrid for a run through a tunnel.
The i8 doesn't scream through the tunnel, making echoes that distort the camera's microphone, but the noise the i8 makes is still impressive.
Before the run through the tunnel, you get to hear the small 3-cylinder turbocharged engine gain some RPMs, making sounds you'd never expect from a 3 cylinder.
When the i8 enters tunnel, the sounds become even more noticeable. Remember, these are "fake" sounds mostly.
Listen for yourself in the video above.