You get more and more oil stains, trash and/or grass in the landscape rock, more vehicles that never move, window heat shields made of newspaper or aluminum foil.

I been in car sales since 2011, started working for my brother in his used car lot , then on 2016 to present day i became self employed, still in the car sales field, buy vehicles at dealer auctions(using a DL license) and put them up for sale in my brothers car lot , once i leave the car  they are in charged of advertising and selling the vehicle, i do small scale usually ill have 5-12 vehicles on the lot ,  dont make huge amounts of money but enough  to be self employed semi retired and live a life style that im in total control off.I been eyeing real state for sometime now  but in my situation don't know how that is even possible as being self  employed don't have proof of income, most of my money is tied up in my vehicles , so don't have too much liquid cash and dont want to get screwed getting a hard loan  or getting a loan from my brother, also the fact that in Az (PHX) home prices are still crazy high doesnt help.Like i mentioned before i know nothing of the real estate field but im assuming the process of selling a home takes a lot longer than selling a car .

True but also remember that house you buy will appreciate and if you default on it the bank will more then likely no loss any money on it because of PMI and/or the Hefty down payment you put down on it vs a vehicle that will depreciate soon as you drive it off the lot and the excess mileage you put on it afterwards.

The second Tax-free vehicle that we have in the US is with a Roth IRA and you can Buy houses within your Roth.

Oh, the vehicle market here is not like what I was used to in the states.

Our current Umbrella insurance provider has stopped insuring vehicles in California. 

He also, has in the past purchased plenty drugs, at one instance, buying "$140" worth of drugs...one phone call away, a vehicle comes along quickly, with the dealer in a black hoody and pineapple print (at the time) and swiftly make the exchange.

If the actual method is more beneficial then you will need to keep your gas receipts along with receipts from your other vehicle expenses.MileIQ is a popular app used by many real estate investors and business owners.

Also use the vehicle to look for deals and travel to meetings etc.  

Consider this vehicle instead as it has several major advantages over SD IRA.