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This is a tough one, other than a bad battery I'm not sure what could have caused it.
The can't get out of park could be a faulty brake light switch. If it doesn't know you are stepping on the brake pedal the car won't unlock the shifter to move it out of park. However, I'm pretty sure you should be able to start even if you aren't stepping on the brakes. I could be mistaken.
Any more details on what warning lights come on? There should be detail in the owner's manual.