Pioneer Satnav/handsfree thingy
The design approach here has been that buttons you don't want to press by accident are very thin and close together, at the edge, so that trying to accept a route will inadvertently lead to pressing the button below, which leads to a screen whose purpose seems unclear, but won't help you start your journey and seems can only be exited by starting again with entering your journey details.
Whereas useful items, like telling it to answer the phone or initiate a hands-free call etc. are hidden away behind a tiny button and three levels of menus (also with tiny buttons). I assume this device was designed by someone who understands that talking on the phone while driving (even hands free) is a bad idea and wishes to discourage it.