Just a total brag thread.
I wasn't sure we'd be able to do it, but I really didn't want to turn my 2.5 year old when the new baby arrived so I researched and found that the Babytrend flex-loc is one of the smaller infant buckets out there.
I have a Radian 80XT in the outboard passenger (with LATCH) and a Babytrend flex-loc in the center using the belt. And my big ol' pregnant self can squeeze in next to the baby's seat. This is all with a 6' 220 hubby comfortably sitting in the driver seat (he can also sit in the passenger seat, but the back seat is a squeeze for him.)