Orbit Baby's highly anticipated Double Helix won't hit stores until Fall 2012 now (the company had previously said Spring), but that hasn't dampened the attention the stroller is receiving. The new Orbit Baby Double Helix combines the tandem stroller with the rumble seat to provide seating options for two kids, without one actually sitting on top of the other. Available as both a double stroller (the Double Helix) or an add-on for current Orbit owners (the Helix Plus), the frame takes advantage of Orbit's innovative 360° rotating seats, so tots can face any direction (even each other) at any time. The pushchair's six wheels (two more than most) will ensure silky smooth rides, regardless of which seat lil one's choose. Like the Bugaboo Donkey, the Double Helix also gives families the flexibility to use it as a single stroller or a double (with infant car seats, toddler car seats, or regular seats) by simply flicking a few latches.