When I started riding there was no limits to what you could ride, mind you there was nothing around that did 320kph off the showroom floor. But one could go out and buy a H1 or a H2 which went like shyte of a shovel in a straight line, corners well thats where things got a little tricky. So then the men whom lead us, introduced 250cc laws, for L and P plate riders, so manufactures made 250cc's that went like slightly smaller shytes from a slightly smaller shovel ala, The 1st year well here in Oz, RD250LC the government soon stepped in a told Yammie to detune it. I was lucky enough to get the first RDLC sold here in Vic, by the way that was after the T20supersport the Bonnie, and a stinking hot Z1R (high 10s in the street drags back in the late 70's). So no matter what new laws, brought in to limit new riders, manufactures will aways, come up with a missle that comes under the radar. Darwins law will still sort out those, that really shouldn't be left alone outside the front door, whether they ride a busa or 250 rice rocket.