Collin County, TX — November 5, 2025, Holly Brown was injured due to a single-car accident at approximately 4:45 a.m. along the Central Expressway service road.

According to authorities, 50-year-old Holly Brown was traveling in a southwest bound Mazda on the Central Expressway service road in the vicinity south of the Allen Commerce Parkway intersection when the accident took place.

Officials indicate that, for reasons yet to be confirmed, the Mazda was involved in a single-vehicle collision in which it apparently struck a curb and overturned.

Brown reportedly sustained serious injuries over the course of the accident. Additional details pertaining to this incident are not available at this point in time. The investigation is currently ongoing.

Commentary by Attorney Michael Grossman

When a vehicle overturns after striking a curb, particularly in the early hours of the morning, it’s easy to assume the driver simply lost control. But when serious injuries result, that assumption needs to give way to a closer look at the circumstances—especially when the cause isn’t immediately clear.

1. Did the authorities thoroughly investigate the crash?
A rollover after hitting a curb should raise questions about vehicle behavior and road conditions. Was the crash scene reconstructed to determine the vehicle’s speed, trajectory, and steering input? Did investigators examine whether the curb was unusually high, or if the vehicle veered suddenly to avoid an obstacle? Without a detailed breakdown, it's hard to know whether the crash was purely a matter of misjudgment or something more complex.

2. Has anyone looked into the possibility that a vehicle defect caused the crash?
A sudden rollover may suggest instability or a failure in the Mazda’s suspension, tires, or steering components. Even a malfunction in traction control or stability assist systems can result in a loss of control, especially during evasive maneuvers. These types of failures are not always visible and can be missed if a post-crash inspection wasn’t conducted thoroughly and promptly.

3. Has all the electronic data relating to the crash been collected?
The Mazda likely contains crash data that could explain what happened—vehicle speed, steering angle, brake use, and throttle input in the moments before the rollover. That information could confirm whether the driver tried to correct course or if the vehicle responded in an unexpected way. GPS logs and phone data could also provide timeline context, but that information must be secured quickly to avoid being lost.

When a rollover leads to serious injury and the reason isn’t immediately obvious, the key is to avoid assumptions and let the evidence speak—before it disappears.

Takeaways:

• Rollover crashes require reconstruction to determine whether the vehicle responded as expected.
• Mechanical or electronic failures may cause instability that leads to overturning.
• Crash data can clarify driver actions and vehicle response, but it must be preserved early.