Silicon Valley developer accused of murder after investigators say Tesla reached 142 mph before fatal crash

A Silicon Valley software developer has been charged with murder following a deadly crash on a California highway, according to officials. Investigators claim the man was driving his Tesla at speeds exceeding 140 mph moments before the collision, which resulted in the deaths of a mother and her infant daughter. Zachary Chernicky, 31, was arrested on July 13, 2026, and faces two counts of murder in connection with the incident that occurred on December 2, 2025, on Highway 87 near San Jose. According to the Santa Clara County District Attorney’s Office, data retrieved from the crash site indicates Chernicky was traveling at 142 mph fifteen seconds prior to impact, 126 mph five seconds before impact, and approximately 102 mph when his Tesla collided with a stopped Lexus. The collision ignited a fire that claimed the lives of Ivana Balistreri, 29, and her one-year-old daughter, Lilliana. Balistreri was seated in the front passenger seat of the Lexus, while Lilliana was secured in a child safety seat behind her. Lilliana had just turned two years old days before her death. The California Highway Patrol (CHP) confirmed that Chernicky’s vehicle also struck another Tesla and a Toyota, all of which caught fire in the aftermath of the crash. Authorities noted that the focus of the criminal case is not the type of vehicle Chernicky was operating, but rather the extreme speed at which he was allegedly driving. “The Tesla didn’t cause this crash,” said Marisa McKeown, a deputy district attorney, in comments reported by local media. “Chernicky did by driving over 140 miles per hour.” Balistreri’s fiancé, who was driving the Lexus, survived the crash. The CHP stated that the investigation into the incident was a collaborative effort involving both the agency and the district attorney’s office. Officials expressed hope that Chernicky’s arrest would bring some measure of justice to the victims’ families. “The law says that it is murder when someone shoots into a crowd,” said Santa Clara County District Attorney Jeff Rosen in a public statement. “When someone is driving 140 mph, then the driver is the shooter and their car is the bullet.” Chernicky was arraigned earlier this week and ordered to remain in custody without bail. His next court appearance is scheduled for August 25. The case has drawn attention due to the high speeds reportedly involved and the tragic loss of life. Zachary Chernicky is identified as the founder of CHURRDJ, a San Jose-based startup focused on developing software for Pioneer DJ equipment. According to a publicly accessible professional profile, he previously held technical support roles at several technology companies including Apple, Gong, Glean, and Mistral AI. Efforts have been made to confirm Chernicky’s employment history with these firms, though responses have yet to be received. The crash took place on Highway 87 in San Jose, a major thoroughfare known for its heavy traffic flow. The location of the collision suggests that Chernicky’s vehicle may have entered the roadway at a high velocity, leading to a catastrophic chain reaction. The fire that ensued destroyed multiple vehicles and caused extensive damage to the surrounding area. Emergency responders arrived quickly at the scene, but the injuries sustained by the occupants of the Lexus proved to be fatal for both Balistreri and her daughter. As the legal proceedings unfold, the case continues to highlight the dangers associated with excessive speeding and the potential consequences of such reckless behavior. The prosecution will need to present compelling evidence to establish Chernicky’s culpability beyond a reasonable doubt. With the trial date set for later this year, the community awaits further developments in what has become a highly publicized and emotionally charged case.