gistfile1.txt

case R.id.editdetails:
  		pP = gd.getData();
			pP.setStartStamp();
			 //save data in case this is all the user does.
			pP.savePass(pP, getSherlockActivity());
			Intent in = new Intent(getSherlockActivity(), Details.class);//create Park Car Activity
			in.putExtra(MainActivity.PASS, pP); //add on the parking pass to the intent to park car.
			startActivity(in);
			break;

gistfile2.txt

Bundle bundle = getIntent().getExtras();
  	pP = (Pass) bundle.getSerializable(MainActivity.PASS);