For people with the trackable car problem
I found a potential solution. There are some car sharing apps out there where you can rent cars from other people for a couple hours. The two most prominent ones are Zipcar and Getaround. Zipcar isn't very prominent in SoCal. It's huge in the Bay Area but not so much down here, but there are a few areas that have Zipcar nearby. Getaround seems to be a little more prominent down here. There is a location (a private house) within walking distance of my work where I can rent a vehicle for 3 hours for $15-20. They are "remote rentals" where the app unlocks the car for you, so you don't have to interact with anybody. It's just pay the fee via the app and return the car with the same amount of fuel that you picked it up with. It's of course an additional step to throw up a smoke screen, but in the instances where I have to drive to areas that I just can't risk getting caught in it should do the trick.
Of course there's always Uber, but Uber to most locations that I have historically frequented would add $75-80 to the cost of the field trip, which makes it not worth it. The car share thing might be just what the doctor ordered.