I've got an RTL-SDR radio listening on 433Mhz near a public parking lot and I can definitely see the comings and goings of individual cars. While I'm sure ALPRs are taking over any TPMS-based surveillance there's definitely a risk there.
Aside: I'll never get another chance to share this, so please forgive the "humor".
Once my wife was driving, with me as her passenger when, the car's TPMS indicator came on. She was concerned and said "There's this 'TPMS' warning light here. What does that mean?".
Without even thinking I said "That probably means something." Likely the greatest accidental fitting of words to an initialism I've ever made in my life.
> I've got an RTL-SDR radio listening on 433Mhz near a public parking lot and I can definitely see the comings and goings of individual cars.
For anyone else looking to do the same with it this project is great: https://github.com/merbanan/rtl_433