Demonstrate Sound Differences

What happens here

To illustrate the sound disparity, the video presents side-by-side clips showcasing the 'current sound' of NASCAR vehicles and the 'old sound' from previous eras. The presenter points out that the older cars exhibit a much higher-pitched, smoother sound, which might lead some to believe they are turning at higher RPMs, though he clarifies this is not the case. He then introduces the sound of old IROC Firebirds, noting their similarity to the classic NASCAR sound, which will be revisited later in the explanation.

Goal: Audibly distinguish between different eras of NASCAR and related race car sounds.