Seems a bit weird, someone showing off their new bike and there's no noise apart from a beep when the key went in
Seriously, I'd be worried about the lack of noise and some pedestrian not hearing me coming and stepping out in front. Have you thought about attaching a playing card on a peg near a wheel?
Also when overtaking cars on a normal motorbike you can just rev it to let the car driver know you are there.
I can also imagine being hit by a car or truck on that and flying 200 metres down the road due to the lack of weight or it being totally squashed or mangled into my body.
Just saying