The segway ninebot s by itself is abit boring and slow by itself. I have almost crashed when it suddenly breaks automatically and tilts back taking away your knee steering control when you reach 15kmph even tho it advertised 19kmph max speed. However the gokart kit is awesome and you have a good amount of grunt to accelerate up to 27kmph. I would not recommend the ninebot s by itself unless you just like to cruise slowly, but if you get the gokart kit it is totally worth it. The build quality is also very nice and the battery last a good amount of km. I cant wait for the faster pro verson of ninebot gokart to be available in Australia.