A Detroit man is accused of using his sport utility vehicle to terrorize two pregnant women in another vehicle, nearly forcing them into oncoming traffic and ramming their vehicle against a wall.

No one was hurt.

Earl Boyd, 50, is charged with two counts of felony assault with a motor vehicle and with drunken driving in the Saturday incident in the suburb of Livonia. He currently is free on bond.

A 911 tape aired on WLNS-TV in Lansing had the voice of a terrified woman calling for help during the incident.

"Oh my God! He's pushing us!" the woman screamed as a dispatcher tried to calm her down.

Boyd at first followed the women and made gestures at them, Livonia police Lt. Greg Winn said Friday. He then began forcing them into other lanes, nearly pushing them into oncoming traffic, Winn said.

The women, who were 7 1/2 months and 8 1/2 months pregnant, pulled into a parking lot. Boyd then rammed into the side of their SUV, pinning it against a wall, Winn said.

A video from a patrol car shows smoke from the spinning tires of Boyd's Ford Excursion, as he allegedly continued ramming the women's GMC Yukon as police arrived.

Winn said Boyd's motive remained unclear. "We couldn't comprehend what he was blabbering," he said.

Boyd is scheduled for a preliminary examination on Tuesday at 16th District Court in Livonia. Court officials said he would have a court-appointed attorney, but it was unclear who that would be.