Nothing wrong with spending $5k on a bike, just not that piece of shit overpriced rickshaw. I actually was waiting for a joke after that photo. I didn't even know they made bikes like that.
I love cycling, but there is no way you could get me to sit inside that piece of crap for free, much less pay money for it.
Don't buy it or anything like it. If you want to cycle with the family, buy correctly sized, standard (even cheap!) mountain bikes for everyone and put road tyres on them. If your kids are too small to ride their own bike, either get a kids seat or (and I wouldn't personally do this because I think it looks gay) buy a trailer you can tow and they can sit in.
Oh and kettleballs - great, Hummer - gay.