How would I make a cash flow diagram for A car that

cost 29,990 * 6% (sales tax) = 31,789

31,789 - 2746 (Trade in value current car) = 29,403 (loan amount)

5.15 % annually or monthly .43%

monthly payments would be $670.82 for 48 months

the salvage value after 48 months would be 14,995

additonal cost considered

Insuracne over 48 months = 185 per month or total 8880

Maintaince cost total =3650

Total overal cost with everything considered 29,735