Sorry folks, only just picked up these comments - @JGrindel yep, maps work a treat - apple maps or google maps both work via the unit
@Kammy yep! You get a nice display like this (not my photo, just another parkpilot photo - too lazy to go take a pic!)
I'm told that if you fit a compatible camera then you get the parking guide lines too - magic
@Emountain98 it was a straight swap, dead easy - just plug in and go. The only thing i needed for mine was an adapter for the radio antenna (£5 on ebay) - not sure about maxidot functions - i'm sure someone with VCDS know how could assist there though