Instead of jumping into car-specific queries, I suggest figuring out basic operations. Can you get any of the sample firmware apps going, without modifying the sample? That will do two things. The first is figuring out how your car actually responds to the carloop. Things like what speed the CANbus runs on, and whether the exposed CANbus of the car is the primary bus or a secondary bus. Also, you can see how the carloop object is used in the sample firmware.
Once you have that up and running, then you can start doing car-specific things. You will need to program in the parameters such as CANbus speed from what you learned above. Also, once you get into the car-specific queries, the query format will be specific to that model of car.