While the Traxster will rove around happily on pretty much any flat surface, climbing over large obstacles or up steep inclines can be troublesome.  This is because the links are injection molded ABS plastic, which have little grip. 

We just found some black spray-on Plasti-Dip at home depot (~$7.00), which you can spray on your links to greatly improve the traction. 

It’s best to spray them on your links once you have 36 links assembled (number of links per side), but not connected at the ends (e.g. laid out flat).  You also might want to scuff the top of the links up with sandpaper before spraying the plasti-dip on to improve adhesion, since the links are pretty smooth.  You obviously only have to spray the Plasti-Dip on the top of the links, where they contact the ground.  Do not spray it on the inner portion of the links where they engage the drive wheels.

The spray on Plasti-Dip is much easier to apply than the regular Plasti-Dip (which also greatly enhances track grip).

Applying the spray on Plasti-Dip will allow your Traxster to traverse up 45 degree inclines, and climb over many obstacles.