Not many people get to do what Prime Minister Lee Hsien Loong is doing right now - meeting multiple leaders of tech giants like Google, Tesla and Facebook in a span of a few days.

PM Lee is in San Francisco for a working visit ahead of the ASEAN meeting with President Obama next week.

Here's what he's been up to.

Trying out Google's self-driving car:

Hopefully we'll see a fleet of them in Singapore in the very near future.

PM Lee also met with Eric Schmidt, Executive Chairman of Alphabet Inc (the conglomerate that runs Google, YouTube, Nest, etc) and Sundar Pichai, CEO of Google:

He also met with Singaporeans (mostly engineers) working at Google and discussed how "we must make engineering more attractive as a career in Singapore."

He also got a tour of Tesla Motors' factory floor. Tesla Motors is best known for producing cars that run fully on batteries. PM Lee remarked that the factory depends more on robots than humans.

And then he met Facebook founder Mark Zuckerberg, who was in his trademark grey round neck T shirt.

Here's what Zuckerberg had to say about PM Lee in a photograph he shared on his Facebook page:

"It was an honor to host Prime Minister Lee Hsien Loong of Singapore at Facebook HQ today.

The Prime Minister is one of the only world leaders who knows how to code. To recognize his technical skills, we gave the PM this artwork designed at Facebook etched with lines from a computer program he wrote. Coding can be useful -- no matter what your job is!"

So if you're used to seeing negative comments when politicians post photographs on social media, you may want to look away at the comments found on Zuckerberg's post:

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Top photo from Mark Zuckerberg's Facebook page (like he literally owns it).

Other photos from PM Lee Hsien Loong's Facebook page

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