As no debt investment, I think Real Estate might not be the best Vehicle.

Both of my rental houses are doing well producing good cash flow, but back in my back of my head, I'm telling myself another rent house will be a smart decision, but that's hasn’t not happening till 6 more months and I know vehicles are bad investments but when do we start enjoying ourselves

Septic companies around here dont clean drainfield lines , they just replace ( around $ 20K with the new systems ) So I am figuring on about 200 bucks in stone and 80 dollars in fittings and 100 in chemicals .

An investor with one or two notes may not see an efficiency in setting up such a vehicle as compared to having the custodian serve as the processor. 

I've pulled the company branding off of our trucks so I can make my truck pull double duty as my 'REALTOR vehicle' and work truck.

As such you could look into pooled money vehicles and other areas in your local market. 

I would really like to stay with them and was wondering if my agent was just mistaken.I also have my vehicles insured through them.Thanks!

If it is to learn the process, I say go for it, if it is to earn a higher return with less work then I would say there are better vehicles for that.

4) Business use of vehicle capitalized or 100%?

If all your tenants each have two vehicles then the last tenant to rent only gets one space.