She is America's youngest female billionaire; runs a hugely popular burger chain which commands a cult-like following and loves outgoing adrenaline sports like drag racing.
But Lynsi Torres, the owner and president of the $1.1billion In and Out Burger chain, is also one of the world's most secretive company presidents and behind closed doors has had a tumultuous personal life rarely disclosed.
As her company has expanded to 280 stores and a billion dollar value according to the latest analysis by Bloomberg Businessweek, Lynsi has been through a whirlwind of marriages - the first at age 17, then to a minister and most recently a drag racer.
Mystery woman: Lynsi Torres, left, president and owner of the popular In-N-Out Burger chain, right, is notoriously secretive despite her company's burgeoning success
Family history: The West Coast burger chain has been family-run since the first restaurant was opened in Baldwin Park in 1948 by Torres' grandparents Harry and Esther Synder
At the track: With a new hair color Lynsi Torres is rarely seen unless it is to do with racing. The billionaire is an avid drag-racer inheriting the passion, like the fast food business, from her father Guy Snyder
Business is booming for the much-loved West Coast burger chain which started with a tiny drive-through restaurant in Baldwin Park, California, in 1948.
Back then modest Harry and Esther Snyder just wanted a small business to provide for their family.
Some 60 years on there are now more than 280 stores across five states while Warren Buffett has even expressed his envy for its business model and desire to own the successful chain.
But as its popularity grows - sales are reportedly up five per cent year on year - very little is known about the woman at the head of the family-run business, 30-year-old heiress and drag racer Lynsi Torres.
She is in many respects an accidental company chief, rising to the top after a number of unexpected family deaths.
The company’s founder and Lynsi’s grandfather Harry Snyder died in 1976 passing on the company to his son Rich who tragically died in a plane crash at the age of 41.
Lynsi’s beloved father Guy Snyder took on the business but died of a drug overdose when she was just 17.
Can I have fries with that? According to a book on the company Lynsi Torres was teased by schoolmates about her father's work. Last year she bought a $17.4million mansion after becoming In-N-Out president
High-life: The home in Bradbury owned by In-N-Out heiress Lynsi Torres has 7 bedrooms and 16 bathrooms
'Burger Princess': Lynsi Torres reportedly bought her home from former L.A. Dodgers player Adrian Beltre. It is one of the few stories to emerge about the mystery heiress
His mother Esther then took control until her death in 2006 , leaving Lynsi as the company’s sole heir.
With no business training or college degree she was the only person left to keep the 60-year-old chain in the family - her only training was having worked on the weekends at a branch in Redding as a teenager.
The on-going dedication to Harry Snyder's motto ‘the customer is everything’ is as central to the the firm’s success as their double-double cheeseburgers, special sauce and unadvertised secret varieties like the famed 'animal style' .
In-N-Out Burger began with one small drive through restaurant in Baldwin Park
Founded by Harry and Esther in 1948, the second branch opened alongside a Californian highway three years later.
It was the 70s when the chained boomed - with 18 restaurants opened by 1976
Rich Snyder, Lynsi's uncle, took over from his father expanding the restaurant further still over the next 20 years
The chain now has more than 280 outlets, the latest opening in North Texas last year
Fans love it for its fresh ingredients - all the burgers are made at the company's base plants and driven out that day
It also has 'secret variations' on its basic menu which can be ordered from staff by those in the know
Famous patrons have reportedly included Bob Hope, David Letterman and Gordon Ramsay
It is was given a further boost appearing in cult classic film The Big Lebowski
It never franchises outlets and its trucks deliver patties every day to all their stores from its Baldwin Park headquarters and secondary bases in Dallas and Texas.
'My sense of it, having been there and talked to them, it is more like a family, and once you're kind of in the door, you don't want to leave, and of course they don't want you to leave either,' Bob Sandelman, of Sandelman and Assoc told NBC.
And so Lynsi, who has half ownership of the company through a trust and stands to get full ownership at 35, was pushed to the fore - but has managed at the same time to keep a remarkably low profile.
‘I have no clue about her,’ said Janet Lowder, a Rancho Palos Verdes, California, restaurant consultant, told Bloomberg. ‘I was even surprised there was a granddaughter.’
What is known about the young company president is that she's had a tumultuous personal life.
Raised in Shingletown, California, she attended a private Christian high school and has two half sisters on her mother’s side. According to Stacy Perman's book on the family Lynsi was teased by schoolmates who dubbed her the 'burger princess'.
She has been married three times, first to her child sweetheart Jeremiah Seawell at the age of 17 who she divorced two years later.
Drag-racer: One of the few times the extremely private Lynsi Torres is seen in public is on the track of her beloved drag-racing. In-N-Out sponsor a car and she is often spotted at the track
Success story: In-N-Out now has over 260 restaurants and is reportedly worth over a billion dollars. It started out as one drive through diner in Baldwin Park in 1948
She remarried in 2006, this time to Richard Martinez who became a minister and with whom she had twins – a boy and a girl.