3 car seats ... we have a toddler and are now expecting twins - HELP

[thrilled82]

Anyone have experience/tips/advice on how I accomodate 3 car seats in my car?

We found out this week that baby #2 is actually baby #2 & #3

DD is in a Infa Secure Comfo Cruiser (toddler sized forward facing car seat), we have a Safe N Sound Compact Deluxe for Twin 1 and obviously need to go shopping for another baby seat ... but what order of seats do I line them up in my back seat.
I've always thought once you have more then one rearward facing seat you put them to each side but how do I get to the toddler seat in the middle??

I'm thinking we will be a 2 car family until the twins are forward facing ... DH can be DD chauffer while I cart the twins around in my car?