Comic-Con 2011 is well underway, delivering new surprises it seems every few minutes. Thanks to The Post’s Jen Chaney, we’ve learned that Steven Spielberg wants to make “Jurassic Park 4” in the next two to three years, that Robert Rodriguez is planning sequels to “Sin City” and “Machete,” and details about the new “Twilight” film.

Now we have the trailers for “Haywire” and “Drive,” two action films that boast really impressive casts.

Gina Carano, Michael Douglas, Ewan McGregor, Antonia Banderas and Channing Tatum star in “Haywire,” a film about a female black ops agent who wants payback for being double-crossed.

“Drive” has many of the same things going for it. It’s got a great cast that includes Ryan Gosling, Carey Mulligan, Albert Brooks, Ron Perlman, Christina Hendriks and Bryan Cranston, and a lot of tense action sequences. Watch it below:

Steven Spielberg makes Comic-Con debut to talk ‘Tintin’ with Peter Jackson

After ‘Prometheus,’ Ridley Scott says he’s only working in 3D

Pee-Wee Herman still hoping Judd Apatow movie happens

Kristen Stewart, Robert Pattinson and ‘Twilight: Breaking Dawn’ at Comic-Con