That looks like what’s called an “ear-tip” which usually indicates a feral cat that’s been spayed or neutered. There are trap-neuter-return programs in a bunch of areas to keep the cat population manageable. During surgery a little bit of the cat’s ear gets cut in a horizontal line to indicate the cat has already been spayed/neutered so doesn’t need to do it again and doesn’t need to be euthanized.
That looks like what’s called an “ear-tip” which usually indicates a feral cat that’s been spayed or neutered. There are trap-neuter-return programs in a bunch of areas to keep the cat population manageable. During surgery a little bit of the cat’s ear gets cut in a horizontal line to indicate the cat has already been spayed/neutered so doesn’t need to do it again and doesn’t need to be euthanized.
Looks like OP’s car is a former feral kitty.