Excuse if I am too emphatic, but It would be a shame for you to get hurt or dead.
This is a horenously BAD IDEA
1. suffocation from lack of oxygen, CO poisoning, burns, camper fire are all very real threats. Also, in the event of a vehicle accident forces you can't immagine unless you have been in a bad an accident will tear something as heavy as even a small coal stove loose. The forces could easily pull up a section of floor, pull bolts thru the floor, shear bolts off, break cast iron legs off, tear the stove pipe off.
Can you visualize gasoline spilled all over and red hot coals spilled all over while you are unconsious in your camper