if you're good with people and can guide people to make good decisions, go for it. i go to my dealer for check ups and always see people looking at cars and talking to sales people. if you can handle the pressure of hitting your quota, try it out. plenty of people make a living selling cars. though a college degree isn't really necessary.
consider joining the military if you're unsure of a career. they have hundreds of jobs that aren't all combat or infantry related. with your degree, you could apply for officers training, or enlist and start at a higher grade, as high as E-4 in some branches. enlisted personnel serve 4-6 years depending on the job, officers serve 5-10.
you can see ALL the jobs they have on the branches websites. but you only qualify for them via testing and availability. a recruiter will have more info.