Emergency vehicular window-breaking device

An emergency vehicular window-breaking device comprising:

• a striker mechanism and a trigger;
• wherein the emergency vehicular window-breaking device is operable to shatter a window of a vehicle that has become at least partially submerged;
• wherein the emergency vehicular window-breaking device is located within the vehicle where the striker mechanism strikes the window and the trigger is exposed to rising water as the vehicle sinks;
• wherein the striker mechanism shatters a window glass after activation by the trigger;
• wherein the trigger activates the striker mechanism responsive to being submerged;
• wherein the striker mechanism comprises a striker, a striker mounting bracket, and a compression spring;
• wherein the striker mounting bracket holds the striker away from the window glass and under tension from the compression spring;
• wherein the compression spring forces the striker to impact the window glass after the striker is activated by the trigger;
• wherein the striker is an L-shaped armature comprising a punch leg and a trigger leg;
• wherein the punch leg comprises a tip and is oriented to be perpendicular to the window glass;
• wherein the tip is sharpened to a point such that the tip shatters the window glass when the tip impacts the window glass.