Work Together

Here are two hints, in case anyone should get stuck:

Spoiler: Hint 1

Does require one autopilot.

Spoiler: Hint 2

To return from the metal squares, ride pillarR (requires a bit of timing).

Great logic level! It has couple of tricks but very intuitive. Thanks!

I don't think the hints were required as it's always fun to solve and know how the puzzle is ... Btw loved it...

Indonesian people say.. "Keren!"

What @cpw is going to say on your next level.

Nice use of steps and R traps. Everything worked first time.

Excellent ... I had to turn some honorary rounds, but with the warm-up came courage and self-confidence and afte a while the sensational adventure was done with a lot of thinking and fun ... I am thrilled and fascinated by so much creativity and appealing architecture !!!

Excellent logic level with a few tricky steps!! Intuitive and clean!! Really enjoyable!! Thanks for sharing and well done @Star Penguin

What a nerve-wracking endeavour . Figuring out the solution was one thing, but executing it was entirely another. So many little things would go wrong, even the first ball refused to land properly a few times! And like @Gepeto, successfully avoiding the ball drop .. gaah! I could manage passing one way, but going the other way was my nemesis.
But in the end .. what an endorphin rush!
Well done, and thank you!
A firm 5 stars - no virtual sixth: just because of the extra few grey hairs

Spoiler: At last

This method works for me most of the time. To safely pass the ball with B going in direction 1 (north), send him first to block 2 (from the east). Then tap one step back on 3, so that he turns slightly. Finally, send him straight past to his position below, without stopping. From 3, he'll waddle to his left as he turns and passes the ball. Most of the time.

What happened to the stars?!
Here they are again

I completed this, but I used

Spoiler

two autopilots not one and didn't have to avoid the ball that @trids and @Gepeto mentioned,

so apparently that wasn't the intended solution? Mine is much less nerve-wracking, though.

OK, here's a video of how I did it:

Spoiler: Video Solution

I avoided getting grey hairs solving the level, but then lost a few trying to figure out how it could be solved any differently. Mostly

Spoiler

I couldn't find any other way to get to the lower of the two balls needed to allow P to walk across, and I couldn't see any other purpose to the ball that @Gepeto and @trids were trying to avoid.

Enlightenment is welcome!

Well done @Buurmas .. i can't recall my method, but it definitely wasn't the same as yours.
Very nice - this is why i love alternative solutions.