Hardly tiny. That thing has a 450cc motor! Great gobs of power! The tail light serves as a brake light so people following you don't slam into you when you stop quickly on the trail (I've seen that happen - and taken the two riders to hospital with broken bones).I was wondering what is a Yamaha. I thought it was a tiny motorcycle.
But it is actually a tiny motorcycle with 4 wheels. It is not street-legal so it can have no light or any light on its rear.
Road vehicles need pollution controls, seat belts, air bags and proper lighting. Their bumper must resist a 5mph crash.
I don't think the toy will meet the requirements.
Quad bikes are a long way short of been toys, and are motorbikes more than cars - so your car requirements don't apply.
In the UK (and presumably most of the world?), you can buy two types - off road ones, and street legal road going versions.