placed in the memory module thereafter an indication by the gps module of the location of the lawnmower may cause the microcontrollers to select the correct first pass data map for automated execution by the lawnmower on later passes in alternative embodiments for example identifying information may be input in accordance with each different map and or a user may indicate identifying information to the microcontroller for each first pass taken moreover in the case of a lawnmower unit equipped with for example a wired or wireless download link one or more first pass data sets may be stored remotely from the lawnmower and may be later accessed automatically or manually from the remote storage location such as via an on board wireless connection for later automated passes of the lawnmower more particularly the lawnmower device may make a first pass at the direction of a human operator or via a remote indication such as from a human operator or from a mapping program e g in embodiments in which a map of a given lawn has already been drawn such as via a survey in accordance with this first pass data including wheel encoded data may be recorded and stored in the memory module for later use during autonomous operation any number of.