I worked at a dealership for 3 years and not going to lie all 3 years were miserable. You will probably receive some sort of sales training in a boardroom with other green sales guys. Most will wash out after 3 months.
ABC - Always be closing! You have to close that deal even though buddy guy has 10k negative equity or you hosed him on the trade in. ABC!!!!
Cold calling - Hi, this is so and so from Insert Dealer Name. We'd like to buy you car so when can you come in for an appointment
Or we have a sales event in 2 weeks and we'd LOVE you to come by , enjoy some snacks, and check out the new cars. Which day works best for ya? - now imagine being given a list early in the day and all you do is call call call.
Looks at the sales board, only two deliveries this month. How to feed the family???? Commission sucks unless you are savage in sales. You'll be working easily 50+ hours and no weekends off. Imagine being on your phone during your kid's recital to send details to clients so you can get an appointment.
They taught us the 30% rule. 30% of the calls you make will probably turn into appointments. 30% appointments turn into deals. (Even that seems high thinking about it now). My ratio was like 10-12%???
Most sales that I know worked HARD to become SM and they took years to get there. And sorry to burst you bubble but everyone wants to be a finance manager. That's one of the $$$ positions since most don't know you can still haggle for stuff in there.
If you really want to know what it is like, go apply for a PT lot attendant position and actually see what the guys do. If you like it, then make the jump. If not, then consider something else.
As for me, I decided family and waifu was more important and switched to a trades job instead. First year is hard financially but I broke even in my second year with all the over time we have at work.