Business Tax: Personal use of company-owned car should be added to each employee’s Form W-2, Wage & Tax Statement. Standard mileage rate not available for cars costing more than ~$15,000.
S-corporation: Shareholder’s health insurance premiums should be added to the shareholder’s Form W-2, Wage & Tax Statement. This income is not subject to FICA, and is then allowed as a deduction on the shareholder's income tax return (yes, it seems silly: the rules require you to add it to income and then turn around and deduct it).