Agreed I recently jumped in a hire car in Germany , punched in my brothers address and set off... Ended up taking me through the centre of Hamburg at rush hour which wasn't fun as that was the first time I'd driven a left hooker manual. My brother thought it hilarious. You would need eyes in the back of your head in a right hand drive
Anyway, I'm following this with interest as it sounds a superb trip and a little different from the norm.
I like to jump in the car on a whim and go for a drive, this sounds the ultimate...... Apart from the months of planning