en.wikipedia.org/wiki/Thermite
Doesn’t remove the cars, but sends a loud message.

Hate on cars all you want, and the idiocy that accompanies them, but please don’t encourage setting things on fire in California, especially as they start to enter fire season. That’s a good way to end up with massive, out of control fires that do billions in damage.

Just call a towtruck. They’ll have a field day here.