My company gives me $800 a month for a car allowance. I can keep my current car and pocket the cash. This is frowned on. They typically want you to get a 4 door sedan of a higher end. Most drive audi, BMW, lexus or infiniti. I am partial to infinitis and i have had one in the past. I can lease, buy or pay cash and keep the $800 per month. Any thoughts on which and why?