How to aggregate query result in elasticsearch

I am new in elasticsearch. I want elasticsearch result be like following sql query,

select distinct(car_name) from car_master where car_name like '%SUV%'

I am getting result by doing:

{ "query": {
    "query_string": {
    "fields" : ["car_name"],
    "query": "*SUV*"
    }
  }
}

but I want distinct records.