my personal experience with my car and entering Malaysia, Laos, Cambodia,
they never look in the car!!
but then u have left Thailand illegally an entered another country illegally as well so what do u do next?

IF u go to your emabssy an report ur passport stolen /lost they will check an see if u came in legally and .....
then ur in a load of shit.
NO way you could fly anywhere as then u go thru immigration....