Ride-hailing app Lyft said most of its rides will be in self-driving cars within five years.

Lyft co-founder and President John Zimmer also predicted in a Sunday blog post that autonomous vehicles will account for most Lyft rides by 2021, and that personal car ownership will come to an end in major cities by 2025.

Laying out the bold forecasts, Zimmer smacked down Tesla founder Elon Musk’s “Master Plan,” unveiled this summer, in which the hard-charging billionaire envisioned Tesla owners paying for their cars by loaning them out to other drivers through a Tesla app.

“For starters, our fleet will provide significantly more consistency and availability than a patchwork of privately owned cars,” said Zimmer, whose company is testing self-driving cars in San Francisco and Phoenix in a partnership with General Motors.

“Individual car owners won’t want to rent their cars to strangers,” wrote Zimmer, likening Lyft’s car network to a subscription service akin to Netflix or Spotify.

Zimmer said autonomous cars will start out giving rides at low speeds, around 25 miles per hour, in limited areas with a number of restrictions — staying off the roads in bad weather, for example.

“As technology improves, these cars will be able to drive themselves in more and more situations,” Zimmer said.

Last week, Uber began offering rides to a select group of customers in a pilot program in Pittsburgh.

Putting a positive spin on the end of car ownership, Zimmer said roads will be less congested and that spaces currently occupied by streets and parking lots could be converted to “common spaces where culture can thrive.”