This is already a feature of the Google map, but that's not currently working.

This provides better image quality, greater speed and reduced bandwidth.

The actual data doesn't matter, so just send to /dev/null or avoid
downloading it altogether.

This is a batch job so if the server is slightly slow, we'll wait.

Despite being given the --quiet option, rsync will write an error
message if it can't change to a directory on the remote server. This
happens for servers that mirror only a subset of architectures and
results in cron mailing error messages on every such run. Since errors
are tracked elsewhere, just drop anything going to stderr from rsync.