When I bought the Coupe home from Positano earlier this year it was all on the phone, bluetoothed to the stereo.
Navigation
(Speed warnings)
Traffic warnings
Music
Email and entertainment during breaks
Booking the ferry
Taking photos of beautiful views
Paying tolls, oh god, so many tolls
I did Lyon to Whitchurch through the tunnel in one run over night with several short breaks.
The map re-routed me due to accidents on the road a couple of times, I would not be without that function on the roads around the UK and EU these days if I had any schedule.
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