ABC News reports that "...Scheuer, a mail man, had a two-decade history of surgeries and pain medication prescriptions for spinal issues. He also said two calls to Scheuer's cellphone messaging system from his phone contradict his claims he was unconscious for three hours after the accident." Mr. Scheure's lawyers did not dispute the claim by GM. Background story - GM Ignition Switch Defect Hurt Or Killed 400
Image of GM's Mary Barra is from her testimony on the issue to Congress.