A car salesman offered a lower pricer for the vehicle if you "pay cash". They offered 16,9 for cash but finance was 22. Would it be possible to have a third party give me a loan for the car and offer the salesman that as "cash"? Or will that not be accepted by them or will it look shady? I also have a company that says they can give me the money for the car and then I pay them.
The car dealership doesn't care where you get the cash; they care about it becoming their money immediately and with no risk or complications. Any loan or other arrangements you make to raise the cash is Your Problem, not theirs, unless you arrange the loan through them.