[russellbdavis]

Hmm..well, if you assign a different image to each of the 3 views (front, left, top) and then create a model by editing in each of the views, and align your object to the background image(s), there is only a single model object. There won't be three seperate objects that you need to merge.

So, if you made the back, front and side of a truck, then set the background of each view to be those images. Then, create a single object by aligning it with the background in each viewport.