Can you hack and own my fully patched Pixel phone? Or my GF's iPhone? Sure, sophisticated state-sponsored actors can sometimes do it by burning several million dollars worth of 0days in the process, but some two-digit IQ riff-raffs? Probably not so much.
EDIT: just to be clear - by "two-digit IQ riff-raff" I meant OP's neighborhood car thieves, not you :)