I am leaving in a car, but instead of a capsule, we've bought a 0-4 years car seat - you know the one you can change around once baby is a little bigger and it tips back for newborns. Then a family friend told me that I needed an actual capsule that is approved by the hospital before they'll let me leave :s
I think I read it somewhere too on a pamphlet though I am not 100% sure.