Pros
It's challenging. Learning auto sales is hard work, but it is very exciting. You work long hours but when you sell a few cars, it makes it all worth it. They do a few things to keep the staff happy. Don Jacobs Jr does a wonderful job. You get 3 months of relief pay for the first few months to give you a cushion.
Cons
They don't advertise so there are some days (sometimes a few) where you don't get to sell a car or even talk to someone about a purchase. It's all commission pay so if you aren't selling you aren't making any money. Your co-workers will try and steal your sale or invent reasons why they deserve a portion of your sale. The sales staff is cancerous! As soon as you start the job they tell you why it's the worst job you could've taken.