There are many companies out there willing to pay to wrap your vehicle (any vehicle actually) and pay between $4-600 a month. There is a clearing house you register with and they match you with a manufacturer but you do not get to choose the product, so you could be advertising Viagra or Metamucil!

Plus, you can have no traffic tickets, be over 25yrs old, agree to a few years "service", and have a tracking unit installed to make sure you drive a minimum number of miles.