Not to mention the more hours you on the road the higher probability of you meet in an accident, and accidents cost money out from your pockets too.
Driving long hours (8 hours and above) is not an easy task as well (try driving from Hatyai to Johor in a day), you will definitely feel the fatigue on your body at the end of the day when you step out from the car, not too sure hows that going to do to your health on the long run.

I did Grab/Uber for a month (part time) and I really can't add up the math to convince myself ( maybe because of part time i can't really get the incentive..... )