A Milwaukee man is being held in the Waushara County jail after a high-speed chase on I-39 Friday. Authorities say it started when 46 year old Mark Eliopulos carjacked a vehicle in Wausau. Police put out an alert of a stolen car, and a state trooper located the car southbound on I-39. Authorities put out stop strips on the highway near Hancock, but Eliopulos swerved to avoid them. But with the help of On-Star technology slowing the vehicle down, troopers were able to apprehend him. At one point, the chase hit speeds of 115 miles per hour. A 5000 dollar cash bond was ordered for Eliopulos.