Welcome NJM bhai, to Pakwheels.
You have a good point. Usually, what members do here, is they start their own thread and post the pictures of the type of vehicles they like to discuss, either from other website and start a discussion group.
You can start here in this thread and post the pictures that you have taken of long vehicles.
Other than that, we really don't have a Separate category, for Cars, Trucks, Buses, etc. If, however, there are alot of requests, the admin can decide to make a Subsection, such as what we have already, i.e. Aircraft/Trains, Members and Rides, D.I.Y section, etc.
Enjoy your stay here.
You will be hooked to his site soon, brother, and feel that your day is NOT complete until you have visited Pakwheels... It has happened to all of us.