Parents be responsible? In California? HAH!!!! Good One !!!!
Even on bikes, rules of the road must be followed, as able, ie no you are not expected to go 45 mph on a pedal bike (until now it seems)
I also thought there were laws that one was supposed to ride on the roads after a certain age, NOT the sidewalks.
Let the little crotch goblins loose on the roads, this problem will sort itself out, and we get rid of a few of those useless eaters they keep complaining about.
They probably shouldn't call them motorcycles, as a motorcycle requires a tag correct, or does not have pedals? Maybe electric bike, e bike instead, since they do still have pedals if I am not mistaken?
They don't need licenses because they are not considered motorized vehicles, because of the pedals. That's typically one of the selling points they use as well for them.
Personally, I say let the kids have fun but if they are causing trouble, whoop their asses. This is a parenting issue, not so much a bike issue. Tell the kids to behave on their bikes, don't take away the bikes. Being teenagers they won't obey, however cuckifornia has cameras all over the place, it should not be too hard to figure out who they are, ticket them, and give them community service and a fine that costs roughly what the bike did.
Given the bikes are probably of high quality chineesium to begin with, in a few months it'll catch on fire and burn the house down along with it, there, bike and unruly kid problem both solved !!
Aaron