Here is what I generally use in Memphis for my ratings:A+  no cashflow whatsoever if you bought here, good appreciation, great schools, larger houses, beautiful homesA great neighborhood well kept mostly all homeowners, more likelyhood of appreciation, not as great of cashflowB decent area but some homes are not perfect, quite a bit of renters but still homeowners, decent cashflow, decent/some appreciationC Very few homeowners if not any, more run down houses, good cashflow, very little appreciation, D&F  Warzone, dont event want to get our of your car, lots of boarded up houses, cashflow looks amazing on paper 2-3% rule "on paper" ARV < $45k

Is it full of cars?

However the absolute best way is to drive an area you are interested in in the evening an see what kind of cars are parked in the driveways and garages.

You can't build a rap if you get ZERO deals or leads.You NEED to have a website period, no matter if you do wholesale deals, sell cars, clean toilets, looking for new clients.There is no debating nor arguing this.If you send someone a letter/postcard or door-knocking, and I do the same and they look us up, and you are nowhere to be found while me...ALL over Google with 21,     5 star google reviews do you really think you will EVER..

The neighbors said her car hadn't moved in about a month. 

It's like a 13-year-old asking which tires are best for his car when he hasn't even earned his license.Build a business, then worry about building a better business.

What dynamics change when we have driverless cars?

If it's worth over $1000 to you for someone to hold your hand through the process, then go ahead but I'd be saving that money up for a set of tires for your car or something...

I would say to find a realtor who works with investors in the North end to nail down those numbers, honestly I would be inclined to convert the single car garages into a 2nd bedroom. 

@Joey AllisonPay off or sell the cars.