Reckless driver swerving into oncoming traffic

It's a gray or green Nissan Altima, (number withheld) , which returns clear in a 21 Nissan out of Napa, swerving, unattainable, driving into oncoming traffic on curb.

Again, broadcast for 23 103 stop on Howell Mountain at College.A gray or green Nissan Altima, Golden Gate clear.