Polaris Stops Slingshot Sales To Fix Steering And Roll Hoops...
Polaris is asking everyone to stop selling and/or driving the Slingshot immediately because of a potential issue with the steering bearings which, "should they fail, will result in unexpected loss of steering control."

http://jalopnik.com/polaris-stops-slingshot-sales-to-fix-steering-and-roll-1680065216