No, and I still haven't managed to find the exact reason why it happens despite talking to many people. Must be some dumb issue like a typo or something somewhere, because changing all of the values that should theoretically fix it doesn't work.
Maybe it's the issue that the MAN truck mod also have, to be not able to drive in traffic, which seems to be that the car takes too long to accelerate which triggers the AI in the way that it thinks it stucks, so it stops trying to accelerate and go in reverse. Some vehicles are "too slow" as it seems to spawn directly with the proper speed.
The next model will be made by using scans of the real car. I have the Personal and ST scan but does anyone have a FL and EL scan? Meaby even BIS? I can take anything as long as the shape is correct or at least close to the real ones.
Did you made that scan on that blue one from the picture? If so, how you got the windows so good? 3d Spray?
I see the size and proportions are accurate now with the new model. You will have to remember to remove the temporary scale modifiers from Jbeam when you replace it. (And it probably won't be me this time who works on Jbeam, as I won't have anywhere near as much time as I had when I made updates 1.0 and 1.5)