Each of our experts have great credentials and many years of experience in automotive safety or related fields. Please contact us if you would like more information on any of our experts.

Xprts, LLC is proud to welcome Dr. Stephen A. Batzer and Dr. Jacqueline G. Paver to our Team of Experts. Both Dr. Batzer and Dr. Paver participated in the scientific evaluation of the Jordan Rollover System and are well versed in its technology and its various applications to litigation.

Stephen A. Batzer, Ph.D.


Dr. Batzer obtained his Ph.D. in Mechanical Engineering and has been testifying for more than a decade in the following areas; Forensic Engineering, Materials Science and Material Failure Mechanisms (Glazing), Vehicle Crashworthiness, Accident Reconstruction and Occupant Kinematics Analysis, Intellectual Property and Patent Analysis, and Firearms Safety and Failure Analysis.

Jacqueline Paver, Ph.D.


Dr. Paver earned her Ph. D. in Biomedical Engineering from Duke University and has been testifying for more than 15 years. Dr. Paver performs biomechanical analyses of vehicular, industrial, and recreational accidents and provides expert testimony in deposition, arbitration, and trial. She conducts full-scale car crash tests that address collision severity, occupant responses, restraint system effectiveness, and injury potential. She has also performed biomechanical analyses of catastrophic head and spinal injuries in rollover and other vehicular accidents, as well as pool/ocean diving accidents with similar injury potential.

Donald Friedman
Mr. Friedman has been active in creative and innovative vehicle design for more than fifty years.  He has been responsible for the design, development and testing of six original vehicles, as well as alternative occupant protection and crashworthiness modifications for 13 production cars. He is proudest of his work on the Sidewinder missile, the Lunar Rover, the Minicars Research Safety Vehicle, air bags, offset frontal impact and rollover occupant safety, and his most recent efforts in human safety research.  He has authored more than 80 technical papers on these subjects and the government has published more than fifty of his research contract reports.  In the last 17 years he has consulted and testified in over five hundred product liability litigation cases integrating accident reconstruction, occupant kinematics, injury mechanisms, vehicle and restraint design, as well as computer analysis, simulation and validation of alternate injury mitigation means.

Terence Honikman, Ph.D.
Dr. Honikman has been providing expert forensic engineering consultant services since 1986.  He has analyzed more than four thousand automobile accidents and testified in over 350 trials as an accident reconstruction and biomechanical expert.  He has designed and performed crash tests in which live humans as well as crash test dummies were subjected to crash forces and accelerations.  He also served as an instructor of forensic engineering at the University of California at Santa Barbara.  Dr. Honikman’s litigation experience covers the reconstruction of vehicular accidents, the biomechanics of impact trauma and human impact tolerance, low speed automobile impact dynamics analysis, the “seat belt defense,” and automobile product defect cases.  His clients have successfully employed his broad expertise across a broad spectrum of cases including pedestrian impacts and complex collisions involving all manner of vehicles from tricycles and sport utility vehicles to buses and heavy earth moving equipment.

Carl E. Nash, Ph.D.
Dr. Nash has worked in the field of automotive safety for more than thirty years.  After earning his doctorate, he became a public interest auto safety advocate.  As a Senior Executive with the National Highway Traffic Safety Administration for 16 years, he directed programs in safety standards engineering, crash investigation, and evaluation.  He also conducted research and published in the field, and taught graduate courses in motor vehicle safety.  Dr. Nash has substantial experience in crash investigation and analysis from (1) his government experience where he directed the development of training and quality programs for the National Accident Sampling System, (2) teaching courses in crash investigation, modeling and data analysis at the George Washington University, and (3) the detailed reconstruction of dozens of crashes.  He has written extensively on how injuries occur in rollover crashes and has worked on issues of vehicle handling, structural performance, restraints, energy absorption, and the economics of motor vehicle safety, regulation, and has conducted statistical analysis of motor vehicle crash data.