'Old fashioned' California utopian city proposed by tech billionaires including Jan Sramek, Laurene Powell Jobs and Reid Hoffman is seen in gorgeous images - as they reveal plans to have 50,000 residents by 2040

The tech billionaires behind a proposal for a utopian Californian city have revealed their plans for the community that will be 'old-fashioned', walkable and could accommodate 40,000 people by 2040.

Goldman Sachs trader Jan Sramek said he hopes to recreate 'what old towns in America used to feel like' for the Solano County city.

Sramek is the leader of California Forever, a group of investors who have snapped up 50,000 acres worth $800 million to bring their dream to life.

The group is backed by the likes of LinkedIn co-founder Reid Hoffman, Andreessen Horowitz investor Marc Andreessen, and Steve Jobs' widow Laurene Powell Jobs.

If the city is successful, the population could climb as high as 400,000 over the coming decades, California Forever Chief Planner Gabriel Metcalf told the San Francisco Chronicle. 

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California Forever have shared plans for a utopian city in Solano County which could see 40,000 residents housed in the area by 2040

Artists renderings hint at some of the proposals for the 50,000 acres of land the group has purchased, including space for outdoor living and commercial buildings 

If the community is successful the number of residents could soar as high as 400,000 over the next few decades

Artistic renderings of the city feature lush green landscapes with Mediterranean-style homes clustered on hillsides and shorelines.

Clean energy also features heavily through the artists' impressions, with proposals for solar farms to help power the city.

Jan Sramek, the leader of California Forever, is a 36-year-old financial prodigy

Despite the emphasis on green technology, Sramek insists the city will be 'old-fashioned' and take inspiration from other successful neighborhoods such as those in Boston and Philadelphia, as well as San Francisco’s Noe Valley or North Beach.

At a recent forum at a retirement community he told residents: 'We don’t want to build a city of tomorrow, we want to build a city of yesterday,' the San Francisco Chronicle reports.

The renderings also portray the city as noticeable car free, instead dominated by pedestrians and cyclists.

Sramek said he hopes to build a 'walkable' city where 'people can live close to shops'.

Other proposed features include commercial buildings and parks, with one image showing people kayaking through a nature reserve. A survey previously circulated by the group indicated support for 10,000 acres of green open spaces.

While the group has indicated green technology for clean energy are part of the vision leader Smarek hopes to create 'old-fashioned' towns  

A huge emphasis has been placed on ensuring the city is walkable, with artist's renderings showing streetscapes dominated by pedestrians and cyclists

Cars are noticeably absent from the artist's renderings, with a focus instead on green transport methods 

Nature features heavily throughout the city's designs. California Forever hopes to develop parks and plant 1million olive trees in the new city

The plans also contain proposals to plant 1million olive trees, as well as orchards.

California Forever's rapid land acquisition sparked federal investigation until the Group's identity and aims became known.

It also set alarm bells ringing due to the city's proposed proximity to Travis Air Force Base.

However, the group has said it is 'committed to respecting its [the base's] boundaries both on the ground and in the air' and envisages that the city could become a place for base personnel to live.

The scale of the project is more than three times the size of Manhattan, which comes in at a measly 14,500 acres compared to the city's 50,000.

It is also much larger than beleaguered San Francisco's 30,000 acres. 

Sramek has previously been critical of the Democrat-led city, mocking it as the city that 'banned plastic straws but permits plastic needles' in an essay for the Financial Times.

'Fentanyl, the synthetic drug that is 50 times more powerful than and a fraction of the cost of heroin, has turned many blocks of the city into zombie zones,' he wrote.

California Forever say they hope to attract investment and jobs to the area 

The land is near crucial Travis Air Force Base, and the group says they hope to work with the base by providing homes to base personnel, and training and career options for veterans

By contrast, Sramek previously stated he hopes his city will feature reduced homelessness, better schools 'as well as resources to invest in infrastructure for transportation, water, and wildfire protection'.

The 36-year-old financial prodigy said he grew up in a blue collar, walkable town in his native Czech Republic and he hopes to recreate this in the new city. 

The father-of-one made his name and his wealth and by his early 20s as an emerging markets trader in Goldman Sachs' London office.

He quit his job days after his 24th birthday and eventually relocated to the Bay area,