

The boys’ grandmother, Katie Martinez, is heartbroken.
“They were strapped in their car seats. They couldn’t even get up to save themselves,” she told ABC7. “She literally locked them in their car seats and shut their doors.”
The grandmother will never forgive her (nor should she).
You’re right. Nobody reads a car’s manual cover-to-cover. Even if there was a way to disable this feature, she probably wouldn’t have known about it.