Re: Performance? Art?
Navigaitng a city where you don't know the finer layout of the road maze, while also needing to keep an eye (or three) out for other traffic of all shapes and sizes? Having a satnav at least tell you when to turn left or right, or, when you missed that or had to detour because of just any applicable reasons, recalculates and offers a new instruction? Very worthwhile.
(Older Garmin plus OpenStreetMaps plus Afrikaans voice)