You mean like my 1970 VW Beatle? Best low fuel indicator ever, when the engine stops you'r out. Kick the valve with your right foot and enjoy a few more miles.Ha! There could also be a "limp" mode. After your car reaches 0% and it physically comes to a halt, there could be a switch that you engage to access that last 10% or maybe even 5%. Basically a turtle mode that you have to physically engage after you've screwed yourself.