tank treads for pot.holes

11.25: gear/tank-based pothole negotiation:

. for pot holes use an attachment that is like tank treads:

like a ski foot used by a snowmobile for steering

except it's an inline skate (a series of skate wheels)

with a tread belt around them;

so when the skate catches the edge of a pothole,

that edge doesn't get lodged between wheels .

. the skate is mounted on the front wheels

in either of 2 positions:

. if there is snow, sand, etc to steer on,

then it's being pressed flat on the ground

to steer the way ski-mobile does .

. if there is pavement or rocks,

then its lifted and angled,

so as to act like the tank's treads .