I know they didn't make appreciation on the note, that was a rhetoric response to another responder who didn't see the difference between the two investment vehicles.

Just as encountering a faulty vehicle does not render all cars unreliable, the saturation of the 500 ft2 studio and 1-bedroom market in Tulum does not diminish the investment potential of other segments within the region. 3 bedroom + properties are still yielding solid returns (double digits).

i think Arbitrage used to be a good vehicle. nowadays, people are more knowledgeable about properties, usage and values and you will have a hard time finding a desirable property at a low cost rent enough to make a profit.

Adding electric vehicles just isn't sustainable.

If you are looking to "slow down" i would recommend you think hard before changing your investment vehicle. 

Real Estate is the constant investment vehicle.

Also note that these investment vehicles are only available to accredited investors, so that should cut down a bit on people doing bad investments. 

I know NOTHING about car motors.

It seems their recommended strategy hasn't really changed and aligns pretty closely with what I read in Stephen Fishman's book "Every Airbnb Host's Tax Guide," that is to set up a Wyoming LLC that holds an LLC in the state where property owned (or another vehicle in CA where LLCs are so pricey) and hold it as a partnership. 

Also I look at my 401K as a ok vehicle but my other investments  (my portfolio) yield much higher returns ... also if all goes well I’m 33 I will retire in 10-12 years ...