I've driven from here in Bucharest to Geneva, Switzerland, about 10 years ago and without using the GPS and I only got lost once, on the return trip around Lago Maggiore because I had chosen to use the "Statale" national road instead of the "Autostrada". It was all on me, and it was a really beautiful place to get "lost" (I ended up on the highway after 45 minutes - an hour of not knowing exactly where I was). I repeated a similar trip about two years later, this time I went all the West to Brittany, France, again, without using the GPS for 99% of the time. The one time when I asked the person sitting on my right to guide me via GPS was when I got lost in the roundabaouts just outside Orleans. Which is to say that one can for sure drive without GPS with almost no issues, no need to sleep in the middle of nowhere at night.