Police say four people were injured after a wrong-way driver crashed into two vehicles. The driver got on the I-17 southbound, but was driving north, at about 10:15 p.m. Wednesday night. Police say they got about 20 911 calls about the driver and quickly made their way to the area to try to stop him. He got around them and ended up side-swiping a car. Two people in that car are in serious condition. The driver then hit another car head-on, leaving its driver, a woman in her 30s, and the wrong-way driving suspect in critical condition.