Police arrested a 34-year-old man who they suspect caused an accident on a German highway that killed two people in July. The man works in the development department at DaimlerChrysler, where his responsibilities include test driving cars, the company confirmed on Monday. The man's drivers license has already been suspended, and he faces charges of manslaughter, reckless driving and leaving the scene of an accident, all of which he denies. A 21-year-old woman and her two-year-old daughter were killed on July 16 after a dark blue Mercedes driving at 230 kph (143 mph) pulled up behind their car, forcing the woman to change into the right-hand lane. She lost control of the car, which slid off the road and hit a tree. Police have established that the man was driving a car of the same model and color, a DaimlerChrysler company car, on the same route and at the same time as the accident occurred.