I think the taxis are bulletproof.

4 seconds sound clip from the Last Action Hero movie soundboard.

You can hear this line at 01:25:44 in the Blu-ray version of the movie.

Quote context

[...]

- Here's another explosion for your movie, kid.

- Not a word. Not one word.

- My hand. It really hurts.

- Things work different here. You can't smash a car window with your bare hand and not have it hurt.

- Thanks for sharing. You couldn't have told me this earlier?

- I think the taxis are bulletproof.

- Jack, We got to get that ticket back.

- No way, Slater. Please. Listen to me. It won't work, you hear me? You can't play chicken in real life. You'll crash!

- Out of the car, amigo.

- This isn't the movies any more, Jack. Here, you have to reload guns...

[...]