I think here, "on the clock" also implies "available to drive" or "driving". I c...

jmilloy on Aug 20, 2020 | parent | context | favorite | on: Rideshare operations are being suspended in Califo...

I think here, "on the clock" also implies "available to drive" or "driving". I can't be driving two different people for two different companies at the same time, so I'm not really available to drive for both companies.