get a honda or yamaha and put on a big bore kit (makes it like and 80cc I think). The cop will never know and you will be the fastest 14 year old in town.
If you are 16 definitely get your class 6. You will be able to get a bike for real cheap and it will be much more useful and fun. still anything but a car is pretty much useless for at least 6 months a year.
I think my buddy is selling his honda 100 dual purpose. I used to own it. Probably tops out at like 80km/h. It is probably the same on gas as a moped if not better. In fact it pretty much is a moped exept it has a real transmission and you need your class 6. Insurance is super cheap too.
I can ask him if you would like. I sold it to him for like 400 and that was a few years ago