 In June 2004 , Superman : The Escape 's seat belts were modified because of an incident on the Superman – Ride of Steel roller coaster at Six Flags New England . California State Regulators asked the park to make modifications to the rides ' restraint systems to prevent a similar incident in the future . 
 In June 2004 , Superman : The Escape <a href='null_genetive' title='1'><mark>'s</mark></a>seat belts <a href='uninflect' title='2'><mark>were</mark></a> modified because of an incident on the Superman – Ride of Steel roller coaster at Six Flags New England . California State Regulators asked the park to make modifications to the rides <a href='null_genetive' title='3'><mark>'</mark></a>restraint systems to prevent a similar incident in the future . 
In June 2004 , Superman : The Escape  seat belts was modified cuz of an incident on da Superman – Ride of Steel roller coaster at Six Flags New England . California State Regulators asked the park to make modifications to tdarides  restraint systems to prevent a similar incident in the future .