what is Woody Allen's hilariously deadpan response to Chris Walken in "Annie Hall"??

[Freejooky]

It’s been driving me nuts for a few days, and I just packed up my DVD copy for moving. In “Annie Hall”, Christopher Walken has a killer cameo as Annie’s deranged brother. After Walken does a hilariously existential and bizarre soliloquy about wanting to suddenly drive off of the road while driving, Woody comes back with a hilariously understarted response.

Does anyone know/remember what it is?

[roger_thornhill]

Seen it often enough, so this should be near if not verbatim:

‘I need to go now, Duane, because I’m due back on planet Earth’

[Freejooky]

That’s it!

[Rilchiam]

Nitpick: Not just “off the road”.

From IMDB:

Duane: Can I confess something? I tell you this as an artist,I think you’ll understand. Sometimes when I’m driving… on the road at night… I see two headlights coming toward me. Fast. I have this sudden impulse to turn the wheel quickly, head-on into the oncoming car. I can anticipate the explosion. The sound of shattering glass. The… flames rising out of the flowing gasoline.

Alvy: Right. Well, I have to - I have to go now, Duane, because I, I’m due back on the planet Earth.

And of course, Duane is elected to drive Alvy and Annie to the airport. In the rain, no less.