I don’t think a 2D drawing would be of much use as far as Motorcycles are concerned. You could not really use it to produce graphics for the Tank, Fairing etc. It’s not really like a Van or a Car where there are flat panels for graphics to be applied.
In answer to your question I am pretty sure you are looking for something that does not really exist. I know DAL in Canada have a very small range of outlines. I think they are just Harley/Police Motorcycles etc. No Japanese/Italian Sports bikes as far as I am aware.