REQUIREMENTS: 
Scripthook 
Community Scripthook .NET 
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Installation ( noob friendly): 
Add SellCars.asi in the main gta v installation directory (where GTA5.exe exists) 
Add folder scripts within the main gta v folder (where GTA5.exe exists) along with 
all its content (meaning that one file , being either access to the dealership or 
to the dealership and lester's house aswell). If folder scripts already exist just 
merge the 2 folders together or add opensimeondoors.dll OR 
opensimeondoorsandlesterhouse.dll inside scripts folder.

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To use:
WARNING! THE GARAGE DOOR WONT OPEN NO MATTER WHAT IN THE FIRST FEW MISSIONS (it is hardcoded within the game's source code). 
If you move some missions past that i beleave it opens up but if it doesnt use a 100% save game or use the horn outside , it will teleport you inside.
WARNING! DO NOT TELEPORT HUGE VEHICLES IF YOU WANT TO KEEP THE IMMERSION ALIVE.
WARNING! If the horn doesn't work ... you are mistaken it does , BUT the mod checks if the horn is pressed otuside every ~=1 second.
Just take a car to the green blip on the map with the burning wheel and stand
inthe middle of the garage right where the blip is.
A cinematic will prompt you out of the car and to one of the corners of the garage while you car will be 
rendered unusable and placed on the car-lifter.
You can only sell up to 60 cars at the same time.
To put addon cars for sale you must first register the car in the docks.
Drive inside the garage and stand in the middle under the blip you will be prompted with a 
window called name . Add the price of the vehicle there in decimals (1234567890) , dont put anything above 2.000.000.000.
YOU CAN NOW SAVE YOUR SETTINGS AND YOUR CARS ! If the mod for some reason doesn't work hit Ctrl+R if this doesnt fix it , 
go and delete the 3 SellCars... .txt files from the main gta v directory.
There is a notification bottom right corner above the minimap telling you that simeon is waiting for a buyer, when this is showing
then it is indicated that atleast 1 car is waiting for a buyer.
After you change the max time a random time between now and said random time is counted backwards for the car to sell.
If you change the time mid sale the cars you have already listed will be sold with the max time
that was active when you first put them up for sale.