/**
  * @return \yii\db\ActiveQuery
  */
 public function getManutencao()
 {
     return $this->hasMany(Manutencao::className(), ['id_motorista' => 'cnh']);
 }
 /**
  * @return \yii\db\ActiveQuery
  */
 public function getManutencaos()
 {
     return $this->hasMany(Manutencao::className(), ['id_veiculo' => 'renavam']);
 }