Legal Question in Traffic Law in Nebraska

A court would need more information and supporting evidence to make a decision, and so would I. Without additional information, the presumption would be against the party backing up; they have a higher duty of care to make certain it is safe to back up. If you could provide credible witnesses that the other car was traveling at a high rate of speed, that might help. If the damage to both cars was minimal, that would tend to undermine your assertion that the other car was speeding.