[maxgebhardt]

ok just glancing over this, but I'm reccomending a track system. line following is good an all, but if the tracker fails then there could be a runnaway robot loose in a museum. also a runnaway poses a risk to the people, and could cause some bad publicity if say, it ran down an old lady, or destroyed some art. also it needs to be more robust than normal, since it could be tampered with, you might consider enclosing the robot in lexan with a lock over the opening, and leaving a big red off button on top in case it does haywire.