I always do 6 day business travel when I am at SFO. My company pay for my rental car and I stay in South San Francisco where my business HQ is and is very closer to the airport car rental place. My question is: instead of having 6 day 1 rental, can I do 3 day rental twice? Anyway, my company has a fixed rate for National car rental per day and is always any number of days I rent. By doing 3 days rental twice (for 6 days), I can quickly reach the Executive Elite status this year and thereby accumulate free days sooner. This is my thought. I am not sure whether there is any downside to this. Any comments or thoughts?