cameras and GPS.
Money Heist Season 3, Episode 2
You said it yourself,
there's no GPS on the van.
Breaking Bad Season 5, Episode 13
Besides, without GPS
Money Heist Season 3, Episode 4
The zeppelins are programmed to fly
to certain GPS coordinates,
Money Heist Season 3, Episode 2
No GPS. Nope.
Breaking Bad Season 5, Episode 13