As you drive from state to state in the US, or even between certain countries in the EU, important laws can change suddenly without your being aware of it.
Today’s invention is a modification to one’s in-car GPS system which detects the crossing of any such border and flags up the most important changes in the law that just occurred.
Those laws involving transport would be emphasised and the system might also take into account the probability of occurrence as well as the severity of the penalties for transgression.
