We had no automobile payments at the time I bought that first income property, and essentially zero credit card debt. 

And certainly neither your property nor your automobile insurance will cover you if you are found negligent in a serious accident (this is an external “threat” to your assets).Insurance companies don’t cover “gross negligence” or “fraud”, and when the claim is large they will find a way to deny it, if possible.

4, I read somewhere that for automobiles shops,one consisting environmental pollution.  

@Justin O'Malley so in addition to the comments about lot rent, mobile homes are not real estate in Colorado, they are personal property (think automobile).

I had no automobile loans, no credit card debt, and absolutely no debt outside of the mortgage for my primary residence.

Just a quirk of the law for regular automobiles.6.

Listen to every one multiple times while you are in automobile university (driving for dollars).Make a list of the top 10 investors in your town or area. 

Of course, I was skeptical when the telephone was invented as well as the automobile.

What condition is their automobile - inside as well as outside?

Then after the Automobile Invasion, White Flight, and beginning of the Suburbs all around the time of post WWII there has been mass amounts of population loss and vacant properties.