Josh mohrer and DaviD hantman

THERE’S AN EARTHQUAKE beneath the streets of New York: The regulations governing taxis and other cars-for-hire are cracking up, thanks to an assault by $40 billion juggernaut Uber.

Uber doesn’t just let passengers hail cars differently, via their slick phone app. It dispatches cars differently, hires people differently, prices rides differently — all of which could undermine the rigid yellow (and now green) cab network New Yorkers have grown used to.

On a parallel track — challenging another highly regulated, powerful industry — Airbnb is enabling some 25,000 New Yorkers to make extra cash by renting out private rooms or vacant apartments to some 700,000 guests a year, sometimes against the letter of the law.

That’s set off a huge fight with legislators and regulators who want wholesale bans on what they call illegal hotels.

Uber New York City general manager Josh Mohrer and Airbnb public policy chief David Hant

man are leading their respective charges to bust open the nation’s largest market. The entrenched cab and hotel lobbies have thus far failed to hold back their rivals. Watch their war — and the tech upstarts’ counterattack — escalate in 2015.