[Papooses]

My Escape was pretty narrow, but it was surprisingly easy to correctly fit a Britax Boulevard FF between Britax Wizard RF & Britax Parkway.... From what I remember about the Vibe, I think it is possible -- just maybe not easy or cheap

You mention the Radian & a newborn, but you have 3 kids? What are the actual ages/weights/heights of your 2 bigger kiddos Also, do you have a budget? Since baby may only fit the infant seat for a few months, we should also consider which seat(s) to save towards for the next 3 across configuration

	Forward Facing Car Seats A forward-facing car seat is one in which the child sits facing the front of the car. The seat should be installed in the back seat of your vehicle. Most forward-facing only seats are for children above 20 pounds.

	Britax - Click for more info Britax International has been producing reliable child safety products for over 30 years. Not only does Britax have decades of experience creating car seats and other children's safety equipment, Britax has a long standing reputation as an industry leader and innovator. Britax International is headquartered in the United Kingdom, but Britax car seats are designed and manufactured at facilities in Germany, Austria, and the United States. In the summer of 2002, Britax strengthened their commitment to creating the safest car seats with the opening of a brand new, state-of-the-art crash testing facility in North Carolina. Britax car seats have a reputation around the world for being some of the safest, most reliable, and best designed child safety seats ever made.

	Rear Facing Car Seats A rear-facing seat is one in which the infant faces the back of the car. Always install a rear-facing seat in the back seat of your car. This is the safest position for an infant. NEVER place a rear-facing seat in the front seat of a vehicle with passenger airbags.

	Infant Car Seats Infant-only rear-facing seats are for babies up to about 22 to 30 pounds, depending on the specific car seat. You will need a new seat when your child gets bigger. Infant-only seats have handles that allow you to move the seat from the car to the house or other locations. Some have a base that you can leave installed in the car, so you can just click the car seat into place each time you use it.

	Britax Boulevard - Click for more info It is all about the wings with the Britax Boulevard convertible car seat - head and torso safety wings help keep your child from harm in a side-impact crash. And this matters - side-impact crashes are the leading cause of death for 6 - 14 year-old children. Of course, the safety wings are only one of the many safety features that the Britax Boulevard offers: built-in lock-offs, 5-point harness with front adjuster, tangle-free webbing, a push button release LATCH system with Versa-Tether®, and a sculpted base, ensuring an easy installation with a secure fit.

	Britax Parkway - Click for more info The new Parkway Booster from Britax builds on their company's reputation as the maker of some of the safest seats on the market today. It's one of the only boosters to offer True Side Impact Protection - the EPS foam-padded headrest and side "wings" aren't just great for naps, they're engineered to provide vital protection to your child in the event of a side-impact crash. (Side-impact crashes are the leading cause of death for children ages 6-14, making this an issue of major importance for booster seats.)

	Sunshine Kids Radian 80 or 65 - Click for more info If "the Sunshine Kid's Radian 80 convertible car seat is (probably) the only car seat you will ever need," the "probably" part of this statement comes into play when you directly compare the Radian 80 with the Britax Regent. While the Radian 80 has a very high weight capacity, the seat width is only 10" vs. the Regent's 14" seat. The Britax Regent may be a bit wider, but it is very bulky, is only forward facing, and does not fold like the Radian 80. Because the Radian 80 is so narrow, you can potentially put three of them side by side in the back seat. Three Regents side by side? Impossible.