Assuming your Sat Nav is the same system as the one I have but with a bigger screen, (mine is 6.5 inch), it should
store the last 10 (or maybe 15) journies. You can find it under 'my destinations' and 'last (something).' it's the bottom left button on the screen. Does it
store all the journies, I don't think so, or I can't find the sub menu for that. Unless your is the Sat Nav High (or the extra option on top of standard Sat Nav) then that one I can't say as I never used that one.