That's a quality problem. Your car can absolutely drop from "alarm" to "empty" in 30 seconds if there's a leak in the tank. We just don't build fuel tanks that

That's a quality problem. Your car can absolutely drop from "alarm" to "empty" in 30 seconds if there's a leak in the tank. We just don't build fuel tanks that don't spontaneously develop leaks, partly because the manufacturer can be held liable.