For the trip I bought two different models.
GoPro Session 4 which is the smaller and simpler version from them. The iOS application is good and it is compact and well made. Expensive.
Camkong Sport Camera £40 on Amazon
https://www.amazon.co.uk/CAMKONG-Underwa...=cm_rdp_product This was a good package and worked well. Slightly larger and not as well made but works fine. iOS application a bit naff but it works and has a carcam mode.
I used a cheap suction camera mount and stuck it behind the mirror on the windscreen.
https://www.amazon.co.uk/BestDealUK-Suct...on+camera+mount This is the output from the road out of Positano - sound down is best if you don't like fruity language at some points !
https://youtu.be/lRCkzokNk9Y