Need a rear facing seat for Mazda Rx8

[colin42]

Hi I have a 2 month old son (weigh ~ 13lb) and I'm looking for a car seat that will fit my Mazda RX8. Our current car seat is huge and won't fit due to the length of the seat

The Issues:
The RX8 (being a coupe) has very limit rear space, it also has a sculpted rear seat with a centre console that limits the width of the seat.

My Ideal seat would be rear facing removable that clips into a fixed base that would allow someone to sit in the passenger seat (without hugging the dash). I'd also require that the seat is approved for use on Aircraft.
Ideally it would also fit a stroller.

Are convertible seats removable or fixed?

What seats have others used is cars with small back seats?

Thanks

	Convertible Car Seats Convertible seats are for infants and toddlers. The seat can be used as a rear-facing seats for younger children, and switched to a forward-facing seat on the child's first birthday if the child weighs at least 20 pounds. However, experts recommend keeping the child in a rear-facing position until he or she outgrows the weight or height allowed by the safety seat. Ready to buy a Convertible car seat? Please support our sponsor!

[glenthorn]

I use a Maxi-Cosi with the Isofix base. Still leaves enough room for a front seat passenger -and a 5ft 9in passenger at that.