Flipping? Unless you find a niche market or do it with real estate (and know what you're doing) there simply isn't enough money in it. There are much better ways to make money.
Our cemetery mapping business has done quite well-we wrapped it up for this year early this month finished the final billing last week. Most government agencies have seen increased tax revenue the last couple of years, and the townships are willing to get their active cemeteries into a database that they can use. While we won't get rich from it, over the last 3 years it put enough to buy a new, nicely optioned SUV in our garage if we elected to spend it. We chose to save the money.
We spend an average of 62 man hours each summer (2 of us, 31 hours each) divided between sales, research, time on site, data entry and training. It works out to about $170/hour for our time, which includes the software I wrote when we started. Aside from the money, it is a lot of fun spending the time with my wife, working together, and exploring the history in the cemeteries. We work when we want and how long we want.
There are lots of ways to make money, but I don't see decent profits in ATV's and cars. With a few rare exceptions, the return on investment simply isn't there. Find an underserved niche market in your area (yes, it takes research), learn the skills that it takes to satisfy that niche market, and go make it happen.
As an example, the son of a couple with whom we are friends has a 1 ton dump truck (mid-80's Ford). He uses it in his spare time to haul rock, dirt, mulch and other items for people in the area that need something hauled that is too small for a "real" dump truck but too large for a pickup. He makes a tidy sum during the summer just on weekends, and his only marketing is word of mouth. We've used him a couple times to haul mulch for us, and his truck is small enough to get into back yards where full size dump trucks can't go. I would not be surprised if his net profits were $300+ on a busy summer weekend. And he is as busy as he wants to be every weekend from early spring to fall.
Opportunity is everywhere. You just need to go find it.