https://www.timesofisrael.com/israeli-forces-kill-west-bank-...
Given that the IDF involved were undercover agents (according to the reports), it seems unlikely that this family knew that driving fast would get them killed.
> He told us the family car had just turned left into his street, facing uphill, and had come to a complete halt before any shots were fired, contradicting the Israeli army account. I asked if he had heard any warnings given by the Israeli forces, or any warning shots fired. "No, nothing," he said. "The firing directly targeted the car. I just heard the woman in the car screaming. The little kids were crying before they were killed."