A.T.
It's funny because it looks like everyone is saying the sit and stand. I agree! You can get an attachment for it for the infant carseat. I got the Joovy one off Craigslist for $100 and I really love it. It's lightweight (compared to double strollers) and it fits in my little Honda Fit. It even fits 3 kids. I use it when we have my sons friend with us. The baby sits in the front and the two boys take turns, one sitting one standing. Its awesome! Everyone gets a free ride!
My only complaint is that the seat doesn't go back that much. But its no big deal for us.
Good Luck!