Home Escape Vehicle

It is easy to think of several situations where it would be desirable to flee a suburban area as quickly as possible. In the event of a nuclear threat on a nearby city, for example, it would not be practical to rapidly escape by car, for obvious reasons. Thus, suppose a vehicle similar in design to the German WWII "buzz-bomb", with several key differences. Instead of a bomb, it would hold a very simple cockpit that holds no more than one or two people and their seats/belts. The plane would be similar to the buzzbomb in that it would be launched (rocket-assisted?) from a small ramp, would run on gasoline, have no controls except for a fuel kill-switch, and land by parachute only (accelerometer-triggered.) One would point the ramp/plane (kept in a garage or backyard) in an appropriate compass direction, adjust the angle of the ramp to clear nearby trees, get in, and ignite. A cheap GPS unit / map inside would allow the occupant to determine when the plane is above a "safe" (inland, far from major targets) area. Then, the engine is killed and the parachute (whole vehicle) is triggered. The only major difficulty in producing such a vehicle would be to minimize its cost, as well as ensuring that "just the right number of people" have them (suburban airspace is somewhat finite.)