i lost my brakes in my 63 plymouth 7 years ago at island dragway which has a little shutdown area, i crossed the traps at 130 mph, went for the brakes and no go.
first i said "damn this is gonna hurt", then i decided to let off of gass pedal, let the car start slowing down on its own a little and then at around 80 mph, down shifted to 2nd, that go me down to around 55 mph, i then clicked off motor and headed for the grass area, which i then slid it sideways a little and it then slowed down to a stand still.
never would i want to drop it in reverse, but i guess pushing my dash trans. buttons to reverse might be an option in the future.