Get SystemEvents like "vehicle/motor/running"

Hello,

I am trying to read the system events, but my attempt so far ends in “Null”.
__context__.get("vehicle/motor/running")
I have seen that there is a “get_event” at Salt.
data = event.get_event(wait=10, tag="vehicle/motor")
But I have no idea on which “client_config” or event to set. The Example from Salt is:

import salt.config
import salt.utils.event

opts = salt.config.client_config('/etc/salt/master')

event = salt.utils.event.get_event(
        'master',
        sock_dir=opts['sock_dir'],
        transport=opts['transport'],
        opts=opts)

data = event.get_event()

I actually think it’s super simple but I don’t get it