Sell cars as in working for a dealership? Or sell cars as opening up your little place?
I was working at a dealership in 06 before the market tanked. It was a BOOMING market, seems like they sold about 5+ a day, or well 5 were picked up a day. Lobby was always full of people and the car hauler came twice a week with 10 cars each time.
Same dealership in 08, well it was dead. They were selling used cars more then new but even that was a slow pace. All the old timers either retired or sucked it up because they couldn't do anything else. All the young people i talked to went somewhere else.
Most didn't know crap about the car. Just read the little booklet and throw out numbers, like 200hp, V6, 0-60 in xxx.
Its a dieing breed, like a bank teller being replaced by ATMs and apps. So is the car salesman, truecar and other places takes away your commission. So all your dealing with is window shoppers.
I do know one thing, its hard to gauge who is pulling your leg and who is serious until its too late. Couple older salesman told me back in the day, when you walked into a dealership 75% of the time you will walk out with a car as long as the dealership could get it and they didn't screw it up. Now its more like 25%.
This might not be the same as a high end dealership.
I buy, repair, drive and sell a car maybe once or twice a year. And honestly its just annoying now. While craigslist is 10 times better then asking around or the newspaper. You get so many scammers and in general just BROKE people its not even funny. If i list a car for $2500, there is no way anyone in the right mind, drunk or not is going to let it go for $500.