A routine traffic stop turned into a 90 mph police chase..all caught on police dashcam.

This happened near Lansing in Ingham County. An Ingham County sheriff's deputy was sitting at a red light for several seconds, when the woman's car sped through the red light at 45-50 miles an hour.   The deputy thought the driver may have committed a crime and gave chase.  At one point, it appears the driver is going to stop--but then takes off again.

The chase lasted about two minutes. The woman suffered severe injuries and was taken to the hospital.  It's amazing the driver didn't kill herself or anyone else, especially when you see how close she came to slamming into a white van and another car. Check out the video.