The Boosted Board is essentially a motorized skateboard with the purpose of being your vehicle of choice for the “last mile”. For example getting you from that train/bus to your destination. It’s a really clever idea with some pretty awesome engineering behind it.
I’m skeptical it will catch on however. While it looks great in purpose, most of the places where this would be ideal, urban places with good public transportation are quite a bit more crowded than the video. I see this as being quite similar to the problem that gets in the way of the Segway. The big perk the Boosted Board has is it’s small and easy to carry on public transportation and would be lower cost. However, good luck operating one in NYC.