A rounded track? No, there is no need.
By having the bogie wheels positioned in the middle of the system, there is no leaning resistance.

The track can easily flex on each side, keeping the traction on the ground even in tight turns.

Easily accessible bolts allows the track system to slide from the front to the back for proper traction depending on the surface.

Deep snow = front
Hard pack = back

This adjustment takes less than a minute!

The curve in the track frame gives a smaller point of contact to the ground for easier handling, without loosing traction.

It also ensures an optimal track attack angle for floatation.

With wheels positioned in the middle of the track, it is like a single wheel riding on a never ending carpet.

Bogie wheels, instead of sliders, do not overheat in low or no snow conditions.

This means you can ride your bike in summer time! Lots of fun in the sand expecially!