I bought my first vehicle in late '07 well past my 18th birthday. Being eighteen and not owning a vehicle is nothing to be ashamed of.
After becoming employed at Hardees here in Dyersville (definitely not my dream job, but a job all the same), I started to search the classifieds for a vehicle. What I needed was a cheap 'work' car. Something that would get me back and fourth to work everyday. When I wasn't having any success I asked God to help guide me. And help me he did. I am now the proud owner of a beautiful 1998 Jeep Grand Cherokee. What should of been a $2,000 + vehicle was the unbelievable price of $925.00 ! Because of my penny pinching I was able to pay in full without a loan from the bank.
Before purchasing my vehicle my mom allowed me to drive her van to and from work each day because she knew that in doing so I was getting closer to purchasing my own vehicle. In exchange I put the gas that I used back into the tank and then some. You have a drivers license right? If so, does either one of your parents have a extra vehicle that you could use in order to get to a possible future job? Or would they perhaps be willing to drive you themselves? If you pay them for gas they may be happy to do so until you are able to purchase your own vehicle.
I hate to break it to you but without a regular job you probably won't be able to afford any type of vehicle much less a truck (trucks can be really expensive). And don't forget that you also have to pay a registeration fee and insurance. And trucks have poor gas mileage, so if you have to drive a far distance to work each day you may put quite a bit of money towards the gas alone.
I hate to be a party pooper, but I think that in order for you to make enough money to afford a vehicle you must first get a job. Fast food really stinks but they are almost always looking to hire.