General Motors (GM -0.6%) conducted detailed testing before concluding that vehicles impacted by the ignition switch recall are safe to drive
The automaker says if only the key (no key ring or additional weight) is attached to the ignition switch the car's operations function normally/
Details of the testing were released on the NHTSA website.
Safety advocates have been calling on the government agency and judges to ground all GM vehicles that were recalled.
GM engineering report (.pdf)