There are plenty of people that make this strategy work, but I'd say there are going to be a lot of moving parts to start out with :) It doesn't even have to be a spec build.

I have plenty of information to back my defense the most important being the wording of Massachusetts Landlord/Tenant Law which mentions nowhere that I am responsible for shoveling snow off my roof nor does it say that I am responsible for the personal belongings of my tenants or their guests (the car). 

You'll have plenty of results come up to give you the information you're looking for. 

There are plenty of resources on this site if you're just looking for educational resources.  

If you're interested in providing funds you'll find plenty of people will to take them (me included).

There's plenty of money to be made in wholesaling cars, I'd think it would be more respectable than wholesaling someone's home and overcharging a real buyer, but I guess it takes all kinds. 

Why sell now when we still have plenty of upside in rent?

It's got a steep learning curve, but after that, it tracks everything in my rental business I can think of, and plenty of things I can't ;)

There are plenty around. 

Plenty of good stuff out there, and there's a wealth of knowledge on this site.