Hi. No, we're talking using straight up brokerage accounts to buy positions, generate a return, and use those returns to pay for the car, er, "depreciating asset."
Money Market type accounts are in the schitter because of interest rates... they don't really even keep up with inflation, but are better than nothing. For our "emergency fund" (e.g. the six months pay kind of thing, but I do a year and we NEVER touch that account for anything), we have an Ally Demand Note account that works like a regular checking account if we want (the money is not "locked") that currently pays 1.5% for deposits over $50K (less for lesser balances). Here's the thing you have to REALLY be careful of post Dodd-Frank. That Ally account (and BMF's Streetshares account) are NOT FDIC insured if the schit hits the fan again like it did in 2009-10. They weren't insured back then either, but the USG covered all kinds of things. The difference post-2010 with Dodd-Frank is that ALL the banks (and bank like institutions) now have language that states they will come after YOUR deposits now before going bust, and yes, it's totally legal/legit (I'm paraphrasing all that, but I am 100% correct). So, both BMF and I run the very real risk of every penny in my Ally or his Streetshares account going "POOF!" one day, but i'll run that educated risk right now while it's still paying 1.5%.... but man 'o man, do I miss the days 20 years ago when it was paying 5-7%, but I didn't have any money back then!