I took a quick look at Breeze.
It costs $250 to join, and a $195 weekly lease. You can return the care only after one month, with two week's notice.
So you're starting $1,420 in the hole.Slate
(I know, Slate) has an article seeing how much Uber drivers make, and came up with a rough estimate that after fees, gas, taxes, etc, many are making roughly $12 an hour. And that's only the hours there was an actual customer in the car. No fares, no money. So let's say you're making roughly $480 a week, now down to $285 because of that weekly fee. Now we're looking at about $7 an hour. Also, not sure what state you're in, but a lot require you to have car insurance, so there's another cost.
I'm not telling you what to do, and my numbers might be slightly off, so I'd advise you to really track down the costs and see if you can suss out how busy the other drivers are, so you can estimate how much you'll be making at the end of the day.