Musician Molemo "Jub Jub" Maarohanye's co-accused in their murder trial should be acquitted, the Protea Magistrate's Court heard on Wednesday.
Themba Tshabalala's lawyer Mlungiseleli Sovithi said the court had failed to prove his client was guilty beyond reasonable doubt.
"I call for the acquittal of my client Themba Tshabalala. If the evidence presented before a court cannot beyond reasonable doubt show that an accused is guilty, that person should be acquitted."
Sovithi said his client had shown remorse after the accident.
Tshabalala told the media previously that he was longing to apologise to the families of the deceased children, but he was afraid this would affect the trial's outcome.
Sovithi also criticised the evidence of eyewitnesses.
Ike Motloung, for Maarohanye, gave his closing arguments on Tuesday.
Maarohanye and Tshabalala face charges of murder, reckless or negligent driving, and driving under the influence of drugs and alcohol. They were allegedly drag-racing on Mdlalose Street, Protea north in March 2010, when they crashed into a group of schoolchildren.
Four boys were killed and two were seriously injured.
The trial continues.