Oh come on man, don't blow your hard work on a shiny whip like some ghetto clown that just hit the lottery, that's probably the worst thing you can do with your money.
Trust me, it's cool and all to work towards nice things but with how hard you're working, a benz is a total waste of $50k just to feel like you fit in with the rich fuckers. You will never beat rich people at being rich so if you've got $50 saved up I'd suggest using about $30k as a down payment on a house and hold the rest or buy a decent car.
Nice cars will come with time if you keep it up. Expecting to get one now is just not smart in a lot of ways. I hope that didn't come across as being a fucking toolbag, I'm just trying to help you make a good move, not just a cool one.