Steal cars of the streets and sell it to the chop shop.
I made money so much quicker than i did raiding shops.
Its also 100000000x safer.
They can only catch you if they camp the chop shop and you can see them if they are.
I did this in the Financial District near the bottom of the map. Theres like two chop shops about 300m apart form each other. I just drove between the two and i made like 10k in a few trips.
You get the most money from turning in armored trucks. I got at least $400 from one armored truck. The sports cars give me about $200 and any other cars give about $100.
We should just have a car stealing day.
All of us just steal cars and turn it into the chop shop then take turns turning it in to the money laundry and getting notoriety 5.