I think it is safe to do like a drive in movie style service. Like you in your own car, window up and tuning into a.m channel to hear the sermon in the church's parking lot.
Then again, you can also tune it in at home but all depends on the strength of the airwave signals.
Then again, they still violate that shelter in place ordinance. Only for essential runs only.
What is from Caesar, give it to Caesar says the bible. Obey your local laws.