I don’t think these are allowed in the US, but they do make adapters: https://www.multimac.com/p/multimac_1320_4_seater
Those are only useful while the kids are in boosters or carseats though. They don’t really add an extra seat in a general sense.
I don’t think these are allowed in the US, but they do make adapters: https://www.multimac.com/p/multimac_1320_4_seater
Those are only useful while the kids are in boosters or carseats though. They don’t really add an extra seat in a general sense.