Rich enclaves paying you to drive a bucket of cell phones around the neighborhood slowly in an electric golf cart.
Or simpler: The rich enclaves pay you to supply their existing private security cars/carts with buckets of charged phones to drive slowly around their existing routes.
I feel like there's a great movie plot point you could write where the bank robbers use this trick to clear traffic out of their way during the escape.
Absolutely.
Rich enclaves paying you to drive a bucket of cell phones around the neighborhood slowly in an electric golf cart.
Or simpler: The rich enclaves pay you to supply their existing private security cars/carts with buckets of charged phones to drive slowly around their existing routes.