I think you are missing an opportunity here. Come up with the sign and register it for royalties. Perhaps a vibrator broken in the middle. Everyone knows that they are always dead when you drag it out of the nightstand.I guess absent minded drivers standing on the road shoulder holding an empty gas can and thumbing a ride to the gas station will be replaced with drivers standing by their discharged EV on the shoulder, holding a tow strap and a charging cord, thumbing for a tow to the next charging station.
"absent minded". You sir are being far too kind. There probably hasn't been a vehicle produced in the last couple of decades that doesn't beep, buzz, flash a warning light, or some combination thereof, when the fuel level gets low. They are hardly "absent minded"... JMHOI guess absent minded drivers standing on the road shoulder holding an empty gas can and thumbing a ride to the gas station will be replaced with drivers standing by their discharged EV on the shoulder, holding a tow strap and a charging cord, thumbing for a tow to the next charging station.