Connect Jade dropdown with table content

I'm trying to connect a jade dropdown with the info that gets displayed in a table.

I'm using this dropdown:

label Car:
    select(id="CarId", class="form-control", name="car_id")
    option(value="0") All
        each car, i in cars
            option(value="#{car._id}") #{car.name}

And the table

table(class=['table','table-hover'])
         thead
             th Device
             th Date
             th In
             th Out
             th Edit
             th Delete
         tbody
            each log, i in logs
                //if car._id == log.car_id
                    tr
                        td #{log.device_id}
                        td #{log.log[0].datetime}
                        td #{log.log[0].in}
                        td #{log.log[0].out}

Is there a way to know wich car is selected so that the table only shows logs from a specific car?

How does this logic go into jade?