I have been thinking of putting one of the Whizzer style kits on my Schwinn. I asked at the DMV and they said if it was under 50cc no license was needed. I asked later at the state trooper station and they said any gas motor device had to be registered and you had to be licensed to operate. I have a 50cc Honda Express scooter that was owned by my mom and it is licensed just like a motorcycle. I am in Austin Texas and have seen a few of these on the road. Is there anyone here who has gone through this?