[Papooses]

The RSTV crash tests really well because kiddo sits so low & further back than more typical seats (injury doesn't happen from movement alone, but when the body impacts the vehicle interior ... which is why it's important that carseats are locked into place rather than just buckled in loosely)

It also distributes crash forces over the entire torso when using the top tether anchor It does lack any side impact protection, though, which is why I only suggest using it in the center -- my kiddo uses it in the center of our 1997 Civic: she slept comfortably in it for 4 hours.

It's a little hot & requires buckling both chest clips + vehicle seatbelt each time so it might take a little longer than you're used to. However, it's much safer than a booster & may be the only safe/correct option for the Liberty

I think you're just going to have to play around seats to figure it out. I'll ask around to see if anyone else has any experience.

P.S. the laws of physics trump state legislation. It's great! that are required till 8 in your state, but many 8+ year olds are still not safe without a booster. The 5 Step Test is the only safe indicator of whether a child can safely ride without a booster. (RSTV meets the law as an approved child safety device/booster)

	Booster Seat A booster seat raises your child up so that the car's lap and shoulder belts fit correctly. The lap belt should fall across the upper thighs. The shoulder belt should go across the middle of the shoulder and chest. A booster seat is used for older children up to about 80 pounds. Some states have passed laws requiring booster seats for children up to age 8 or 80 pounds. Check your state's law.

	Top-Tether A top tether (or top strap) is the supplemental attachment now standard on almost every new carseat in the USA. Top tethers can be used with either the seat belt or with the lower anchors (as part of the LATCH system). In other countries, their use may be required by law. A top-tether is simply a strap that connects the top of the carseat to an anchor mounted in the vehicle at a location behind the carseat, usually the parcel shelf or a point on the floor of the cargo area. It is designed to prevent the forward movement of the top of a forward-facing carseat in a frontal crash. This reduces the head excursion of the child, and can reduce the chances of injury. Almost all current carseats can only meet the tougher new federal safety standards when the tether is used, even though they must still meet the minimum safety standards without a tether.