The vehicle accident might result in the injury and eventually the death of the organisms. This is important to follow the traffic rules and must ride the vehicle with full safety.
The attitude of the driver determines how might he safely drive the car and avoid the accident. Sometimes the location on which the driver's drive might also cause the risk behind the wheel. The clear an complete vision is important for the safety of the passengers.
Every cell in your body has the same genes/DNA but, the gene expression process decides which genes are active in which cells which is how each cell type gets it properties.