If I was a car-free urban dweller, or small town / village where i use the bike and public transport to get around, and had small (pre-K) kids i had to bring with me, then that does make some sense. When they're small, the loading / unloading of kids vastly complicates even simple errand running.
Is it Clever? Yes. Is it Niche? Very.
There are some to whom this will be the perfect solution. I'm just not one of them.

Out here in the 'burbs I get by just fine with a regular bike and a trailer. That thing's got capabilities I just don't need, and I can come up with a lot of solutions for $3 grand.

*Noticed they're from Ontario, Canada. Same as Chariot (now part of Thule).
That part of Candada, and Toronto, in particular seems to be almost Dutch in the way they make use of bikes. Could also be that everyone I know in Toronto is a cyclist