There are a lot of scams out there related to this that advertise big earnings but require investment, like many 'work from home' scams. The wraps cost about $1000 so any that require the driver to buy that are a red flag.
The legit ones only pay $100-$500 per month, not per week, and even then have they have stipulations like you have to drive a minimum of number of x miles per day/week, be a car under a certain age, etc. And that's for a full car wrap covering every external bit of the car, not just a little bumper sticker. But if you're commuting a fairly long distance daily and don't mind a newer car being a billboard, it might be an option for a little passive income.