Landlord is notresponsible for items in your vehicle.

I myself, keep a pad and pen in my vehicle so when i'm driving and I notice something I can write down the address. 

You really do not want to run the risk of getting something happening and you either A) get by under the radar of not driving for business purposes, but not having enough coverage to cover other's injuries or B) Not having commercial insurance on your vehicle and found out that you are driving for business purpose, thus no pay out. 

In my experience the SFR is OK, easier to rent due to demand, however, repairs tend to be much higher when things go bad, such as HVAC, foundation or termite issues, roofs, etc...I think all these investment vehicles work, it really just depends what you feel most comfortable in.

I'm concerned because in the past, my brother borrowed my parents vehicle and was involved in a car accident.

Most platforms would require you to make a cash investment in any case.On a debt platform you may be able to obtain financing with less experience/track record, but 20% down is or those experienced in the type and size transaction you are proposing; 30% is more likely.Crowdfunding platforms are not a vehicle for "no down payment" financing.  

I am familiar with the different financing vehicles involved and was set on something in the 2-3 units range.

There's ways around the VA entitlement that makes it a great investment vehicle. 

There was a study done that estimated that no less then 75,000 vehicles (mixed type) would roll pasted the casino each day and that was just going one way,  If your counting that's 150,000 vehicles a day. 

For example, say you want a new vehicle, go out and find a property that will cash flow enough every month to make the payment on said vehicle.