People will probably start using it on open highways at first, and gradually start using it more, but it's going to take time.Jon brought up a very good point about what happens when there are the first accidents due to the new technology.

How to calculate that is easy, I wrote an article about it, tweak the formula as necessary...http://www.biggerpockets.com/renewsblog/2013/01/19/real-estate-math/After that, just make sure you know the exact condition of the properties, using a home inspector, so you don't end up with unexpected repair expenses.

It was more of an accident than planned as I could not have predicted the market over the period.

Plan for the unexpected… 7.

With all the recent construction accidents, the DOB is under pressure to make construction sites more safe, so it might be harder to get permits or they might be giving out more work order stoppages...

One wrong move or unexpected expense (or layoff, or medical problem, or legal suit, or new baby, or new roof, or whatever)and then what?

Cars that exploded in minor accidents or drove themselves through garage walls?

We fell into the business of student "rooming" houses quite by accident.

There are some exceptions to this rule though. also, always expect the unexpected.

I accidently linked my wife's Facebook account to my Bigger Pockets account.