system
Given the following post, respond as if you're commenting on Reddit:
human
For the programmers of this subreddit , How far do you think we are from driverless semi trucks?

For the programmers of this subreddit , How far do you think we are from driverless semi trucks?
gpt
They already exist. They're being test driven on highways right now.

I think in the short term what we'll see is the semi's just driving the highway, depot to depot, with 'porters' taking care of the last few miles in town. Governments will first roll out approved routes for trucks to drive, which will be major highways etc. It will still be a very long while before they're approved for in town driving.