Multiple $near in mongo 2.6.4 does not work
Mongo DB accepts only one NEAR. And if there is a NEAR, it must be either the root or the rootmust be an AND and its child must be a NEAR. See https://github.com/mongodb/mongo/blob/master/src/mongo/db/query/canonical_query.cpp#L364
If you need that $or operation with two $near, try to make two queries and integrate the results from them.
An example with $or
db.Truck.find({ "DestinationLocation": { "$or":[{ "$near": { "$geometry": { "type": "Point", "coordinates": [-117.256875, 41.856405] }, "$maxDistance": 100000.0 } },{ "$near": { "$geometry": { "type": "Point", "coordinates": [-112.256875, 40.856405] }, "$maxDistance": 100000.0 } }] }})