CLE did run out of glycol.
On 12/23 the FAA showed CLE has having a CAL ground stop........
Two years ago a company wanted to build drive/taxi-through de-icing hangers that would use special lamps to melt the snow/ice on the planes. Apparently it would have been quicker than the current method.
The company wanted to use CLE as the beta site and was going to build the hangers for free.
The administration of Mayor White turned them down. Apparently it would have put some people out of work (at one of CLE's biggest political patronage locations).