shared remote json datasource?

Say i have three kendoDropDownList's.  Each should populate their list using a different part of the response from a single remote json datasource.  So say the datasource is this json object:

{
   "somefield1":"someval",
   "somefield2":"someval2",
   "vendors":{  
      "vendor":[  
         {  
            "vendorName":"kroger",
            "vendorID":251
         },
         {  
            "vendorName":"publix",
            "vendorID":262
         }
      ]
   },
   "drivers":{  
      "driver":[  
         {  
            "firstName":"bob",
            "driverID":12,
         },
         {  
            "firstName":"bill",
            "driverID":15,
         }
   },
   "users":{  
      "user":[  
         {  
            "username":"charlie",
            "employeeid":11
         },
         {  
            "username":"linda",
            "employeeid":2
         }
      ]
   }
}

How would I ​get the first kendoDropDownList to bind to vendors, the second to drivers, and the third to users, without having to hammer the server with three separate requests?