By Tim SchmidtRecord Managing EditorThe family of a Jefferson City woman killed in a pileup on Interstate 70 claims the driver of a tractor-trailer that collided with their mother’s car was driving with a suspended license, according to a wrongful death lawsuit.The suit alleges negligence and carelessness by the tractor-trailer driver, Alejandro M. Medina of Oceanside, Calif. The suit claims he was driving too fast for conditions and failed to maintain his vehicle in a single lane of traffic.The lawsuit was filed last month by the four children of 63-year-old Lynn R. Hebenheimer. It also names the company Medina was driving for, CRST Expedited, Inc., as well as two other drivers, Alyssa A. Brown, of Branson, and Julie K. Green, of Imperial, as being responsible for their mother’s death.Hebenheimer was the lone person killed in the nine-car pileup that occurred Sept. 10, 2014, east of the Highway 47 overpass in Warrenton.Hebenheimer was driving westbound when her vehicle was struck by Medina’s eastbound tractor-trailer that crossed through the cable barriers in the median.The crash was described as one of the worst vehicle crashes in the county by authorities. Firefighters from five departments and eight ambulances representing four agencies responded to the crash. In all, eight people were transported to the hospital.Traffic was backed up for miles between Warrenton and Wright City, stranding motorists for several hours as crews untangled the wreckage. It took firefighters nearly four hours to extricate the driver of one of the three semis involved.The chain-reaction crash started when Brown, driving an eastbound 2003 Jeep Liberty, slowed due to weather conditions and lost control, according to the Missouri State Highway Patrol. The vehicle then struck the right side of a 2007 Ford Mustang driven by Green. Green’s car struck the left side of Medina’s tractor-trailer.The semi crossed into he westbound lanes and hit Hebenheimer’s car, the impact ripping the 2013 Chrysler 300 in half. Five other vehicles were involved.Hebenheimer’s family seeks damages in excess of $25,000, according to the lawsuit. They are being represented by Jefferson City attorney R.L. Veit.Second lawsuit filed in crashA second lawsuit has also been filed related to the crash by another driver.The suit was filed last month by Ammon Lacy and Donna Lacy, both of Warrenton, against Brown, Green, Medina and CRST International.Ammon Lacy was returning home from work when the westbound vehicle he was driving was struck head-on by Medina’s eastbound tractor-trailer. Other vehicles also struck Lacy’s vehicle, according to the lawsuit.Ammon Lacy suffered serious injuries in the collision, including a crushed aorta and crushed intestines. The lawsuit claims Ammon Lacy has permanent injuries, disability and scars from the defendants’ negligence.The Lacy’s are represented by Gary Burger of St. Louis.Lawsuit