Usually a gross misdemeanor, reckless driving.
In a lot of states you can get a year in jail, lose your license, and pay a hefty fine.

Now if you hit someone it could easily be a felony, vehicular assault.

In a lot of states you can go to jail for a typical speeding ticket.

Varies from state to state but typically the officer may cite for reckless driving if you are traveling more than 20 or 25 mph over the posted speed limit. In most jurisdictions that would be 85-90 mph, let alone 142 lol.