Do fiats even have a back seat?!? Do you have another adult coming with you, because if you do…. there is NO way you’re gonna fit 5 people in that car.
Sorry toots…. one of the downsides of reproducing…. is having to utilize a minivan periodcially! No minivan?! ok… a chevy malibu or dodge stratus or that kinda car might accomidte the car seats for the kids. Or you could always go the macho SUV route.
there are cars you can put 3 baby seats in plus you driving but not anymore 2 in the back, one in front but its not good to have one in the front, i would go with a suv or even something bigger cause after all you need to be safe, good luck.