In this video, accident attorney Randy Sevenish reveals Secret #5 about insurance companies: Insurance companies do not want you to understand the importance of preserving evidence. It is important to preserve evidence -- such things as taking a signed affidavit or witness statement while it is fresh in the witness' mind. We want to get our investigators out while the evidence is fresh. If it is a significant impact and the vehicle gets totaled, we want to get a hold of the black box of the vehicle, because the computer black box within most newer vehicles will tell us exactly what happened, speed etc. so we have objective evidence to prove your case.