A new invention is about to transform how Portlanders get around their city.

It's called a bicycle.

We're serious. Technology is reinventing two wheels. The innovation? A tiny electric motor that engages when you pedal. No more laboring up hills—the electric bicycle, or e-bike, does the work.

That small change could power a revolution. E-bikes open cycling to excluded riders: harried moms, people of size, people with disabilities.

In the past three years, sales of e-bikes in the U.S. have nearly tripled—they made up $143 million of the bike industry's $6 billion in sales last year, even as regular bicycle sales declined. That was enough for Fortune to declare the e-bike "marks a new era for the bike industry."

And for Portland, a city always in search of a means to kill the combustible engine, that's an opportunity.

"I recommend everyone who can afford one should get one," says William Henderson, CEO of Ride Report, which compiles data on e-bikes, scooters and other "micro-mobility" devices. "Sell your car, buy an e-bike. It will change your life."

But first, read the following.

Cars are so over. E-bikes are here. Hop on.