Earnhardt's car struck the concrete retaining wall at a heading angle (angle of the vehicle measured from the wall face to the center-line of the car at point of impact) of between 55-59°, combined with a trajectory angle of 13.6° (path of vehicle approaching the wall).
<a href="//commons.wikimedia.org/wiki/User:Egmason" title="User:Egmason">Evan Mason</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>