Agreed (I don't have one). If I did, I also wouldn't sit (and definitely wouldn't nap !!) in it (or near it, after seeing that video !!), while it was charging 
E-bikes are really great though. It makes exploring an area on two wheels, or trips into town for shopping, quite enjoyable.
The sodium ion batteries will need to be proven to show that they are really as safe as is being claimed. However if what is being claimed (with regards to safety of the new sodium batteries vs. lithium ion batteries) is true, then the sodium batteries show a lot of promise. The big bonus would be that they don't have the same risk of catching on fire, that the lithium ion batteries carry as a risk when damaged or they malfunction. Time will tell.
Another interesting take on the car:
