Kenosha police say the 22-year-old woman was trapped in the front seat after the car crashed into a tree at a high rate of speed about 2:30 a.m.
The 21-year-old driver had gotten out of the car and was walking around when officers arrived. The woman was pronounced dead at the scene after she was extricated from the car.
The driver was taken to a local hospital, where he's under police guard.
Police said the man and woman recently moved to the area from New Mexico.

