There is no easy formula for getting sponsored for your racing program. I will try on this page to give you ideas and tips on how to get sponsored. Some just enjoy racing and want to have a team to be theirs, so when they go to the track they can say that's my car out there. These sponsors are hard to find and rarely able to provide the funding for full sponsorship. Sometimes this type is a relative or employer and will provide more than you might expect.
Any little bit helps.
They will perhaps want to use your race car for a display and advertising at their location. You will have to work this sponsor and it will take you almost as much time each week for displays and such as you spend actually on the track. Send regular updates on your program, track results, team and car pictures that they can use to advertise with as well. To advertise for someone you must have an advertising program or idea for them to use as a program. I have seen and found a few that might help.