I don't understand the argument that the lady should be driving as fast (or faster?) than the lorry driver - why?
Also, is the carriageway of the M1, where it approaches J28, single lane? Why didn't the lorry driver overtake the car?
If you post a sketch of what you are making it would aid members to advise you.
You will need to contribute to the forum with more posts first (see posting rules) in order to be able to upload your sketch.
I suppose we have all done something similar, but it's difficult to imagine how you came across lengths of veneer when looking for a bag of spanners. :D