There were some days, and they totally outnumbered the good ones, where Penny feels like packing all her shit up and running away. Not back to Nebraska, no way, but somewhere, anywhere else, where she could pretend like she had never tried and failed to become an actress or a waitress or a real girlfriend.
On those days, she would sit on her couch and mentally calculate how much she could cram into her ailing Volkswagon. The answer was always "not that much," and besides, she was pretty sure the contract Sheldon had made her sign had a clause against bolting in the night. (As it turns out, her lease had one of those, too.)