Parents Rejoice! Volvo Invents An Inflatable Child SeatPatrick George4/14/14 10:00am406EditPromoteGo to permalink"Bulky, heavy and impractical." That's how Volvo describes most child safety seats, and they couldn't be more right. Parents and non-parents alike will tell you what a pain they are to install and haul around. Fortunately, the Swedes have a very clever solution up their sleeves.