[quinxorin]

We take our past robots apart after about four years, but only when the robot either takes up too much space in the shop or when it simply doesn't work anymore. One of our robots (from the innertube year) we converted into a gutter cleaner. It works rather nicely, actually. Unfortunately, it is also a rather nice driveway-dirtier, because all the stuff it blows out of the gutter has to go somewhere.
And as it happens, re-using a non-COTS assembly (such as a drive train) is not permitted.