One of the best choices I ever made for my health was prioritizing regular checkups,

because when it comes to health, knowledge is power.

Fortunately, ZockDok makes booking a doctor a breeze.

Stop putting off those doctors appointments and go to Zocdoch.com slash Hertz to find and instantly book a top-rated doctor today.

That's Z-O-C-D-O-C-com slash H-E-R-T-Z.

Zocdoc.com slash Hertz.

You're listening to 20,000 Hertz.

If I had to pick the most important sound of the last hundred years, I might choose this.

The internal combustion engine.

But most likely, over the next 30 years, that sound will start to fade away.

In 2022, electric vehicles made up more than 10% of global car sales,

and many experts predict that before long, the majority of cars will be electric,

which raises the question, if we won't hear this sound anymore,

what will we hear instead? So we asked ourselves, how would Mother Nature solve this problem?

That's Dexter Garcia.

I'm a co-founder of a company called AudioUX.

We're an audio branding agency that has a unique specialty in sound design for electric vehicles.

AudioUX was founded in 2017.

That was the same year that a U.S. regulation about the sound of hybrid and electric cars went

into effect.

Earlier this year, President Obama signed the Pedestrian Safety Enhancement Act,

giving auto manufacturers until 2017 to come up with a solution to the

...