A simple safety measure like a speed bump might have saved the ship from disaster.
get a asphalt speed bump, but actually get a real speed bump not a speed hump, speed humps are wider and not as high so you can go over them faster then spped bumps
I have a ventless gas stove in my living room. They have to have a sensor that detects low oxygen. If oxygen is low the unit will shut down. I also have a carbon Mon detector and it has never gone off. The heater has also never fogged up the window with moisture. And as far as them being dangerous they work no different than a gas stove. When cooking the gas stove is burning oxygen, producing carbon Mon and putting moisture into the air. I think people forget that stoves are ventless also. The engine idea is crazy. Engines are created to make power, not heat. Heat from an engine is a byproduct of the power it creates. You would get way more heat burning a gallon of gas in a heater of some type than running an engine with a gal of gas.
Check the wiring to the battery starter. If the Jeep has a carb, and not injected, the float in the carb is jumping up and cutting off the fuel. Chances are it's electrical issue.
Better do your homework because if you damage someones car with one you just take a guess at for the height and it ends up in court, you may be paying damages plus ripping up the speed bump. I would suggest you contact the highway dept and ask them about it
