Family Speaks Out After San Jose Man Faces Court in 140 MPH Murder Crash

The family of a mother and toddler killed in a fiery 140 mph crash on Highway 87 last December confronted their alleged killer in a San Jose courtroom this week, pleading with a judge to keep him locked up while the case moves forward. Zachary Chernicky, the 31-year-old Silicon Valley software developer charged with murder in the deaths of 29-year-old Ivana Balistreri and her 2-year-old daughter Lilliana, may face a bail hearing after entering a plea, but his court date was postponed, pushing the next hearing to November 17.

Zach Martins, Ivana Balistreri's fiancé who survived the crash alongside his wife and daughter when Chernicky's Tesla slammed into their stopped Lexus, told reporters the speed prosecutors say Chernicky was driving simply defied belief. As reported by ABC7 Bay Area, Martins said learning the vehicle was traveling 140 miles per hour at 10:45 in the morning made no sense to him. Deputy District Attorney Marisa McKeown told the court that Chernicky is uniquely dangerous and showed reckless disregard for human life, and said prosecutors are seeking to keep him in custody without bail.

Telemetry Data at the Center of the Case

Prosecutors allege Chernicky was driving 140 mph shortly before the collision, and data recovered from his Tesla has become central evidence in the case. According to the Santa Clara County District Attorney's Office, the black-box data showed Chernicky traveling 142 mph 15 seconds before impact, 126 mph five seconds before impact, and 102 mph at the moment he struck the rear of the Balistreri family's stopped Lexus — on a stretch of Highway 87 posted for 65 mph.

The crash happened on December 2, 2025, at around 10 a.m. on northbound Highway 87 near Curtner Avenue, where traffic had come to a complete stop, according to CBS News. Four vehicles were struck in the initial impact, and the collision ignited a fire that engulfed three of them. Hoodline previously reported that San Jose Fire Department crews contained the blaze despite hazards posed by lithium-ion batteries in the two Teslas and the Lexus destroyed in the wreck.

Seven Months Before Charges Were Filed

Chernicky was not charged in the immediate aftermath of the crash. The California Highway Patrol arrested him on July 13, 2026, following a nearly seven-month multi-agency collision reconstruction and black-box data analysis conducted in coordination with county prosecutors, per the same CBS News account. He was held without bail following his initial arraignment.

District Attorney Jeff Rosen has publicly defended the decision to charge Chernicky with murder rather than vehicular manslaughter, arguing that driving 140 mph into stopped traffic amounts to implied malice under California law. 

A Family Grieving in Public

Rosie Balistreri, a family member, said she misses her best friend and niece and asked supporters to help keep Chernicky in jail. Martins told reporters Chernicky's Tesla crashed into him, his wife, and his daughter, describing the moment in stark terms as the family continues to grapple with the aftermath. Lilliana died just two weeks before her second birthday, and SFGate has reported that a community fundraiser has since raised more than $107,000 to cover funeral and legal expenses.

Chernicky is expected to formally enter a plea at the November 17 court hearing, after this week's proceeding was postponed by the Santa Clara County court. Prosecutors have signaled they will continue pushing to keep him detained without bail as the case heads toward that date.

Part of a Troubling Pattern on Highway 87

The case has renewed attention on a string of serious wrecks along the Highway 87 corridor in San Jose. Hoodline has covered a downtown chain-reaction crash in April 2026 that killed a 63-year-old driver, as well as a fatal 1 a.m. crash involving a teenager that March, illustrating ongoing safety concerns on the freeway that community advocates have pushed to address with stronger speed enforcement.

The crash comes even as San Jose has made broader progress on road safety. The city recorded 41 traffic fatalities in 2025, a 16% drop from 49 the year before and its lowest yearly death toll since 2012 under the city's Vision Zero program, according to San José Spotlight. Still, speeding remains a stubborn national problem — the San Jose Police Department has cited federal data showing speeding accounted for 29% of all U.S. traffic fatalities in 2024, representing 11,288 deaths.

For the Balistreri family, those statistics offer little comfort. Their focus now is on the courtroom, where they hope the case against Chernicky results in accountability for the deaths of Ivana and Lilliana Balistreri when the case resumes in November.