Emergency crews attended and Ms Stone was pronounced dead at the scene, police said.
Ms Stone's brother, Gregg, 20, of 3rd Battalion Yorkshire Regiment, was shot and killed in Helmand province in June.
Ms Stone also called for a fairer system of care home funding, calling the current situation "confusing and complicated".
BBC: Council care home beds: 600 lost in Wales in five years
Police believe Ms Stone's car collided with another car travelling in the same direction while they were both attempting to overtake a lorry.
Borrowing against assets, which is essentially the strategy Ms Stone condemns, is routine, and loan proceeds are not taxed under the current income tax.
FORBES: President Obama's Growth-Choking Animus Toward Success
For the past two decades, Ms Stone thinks, many people have felt overwhelmed and anxious, constantly afraid that they could miss out on social opportunities if they concentrate on any one thing.
And Ms. Stone has avoided the pitfalls of early fame, including the drug abuse that led to tragedy for Ms. Winehouse.
For her new album, Mr. Greenberg adds, Ms. Stone didn't sequester herself to sing.
"As much as you know stuff like this happens everywhere, you don't think it could happen here, " Ms. Stone said.
The older brother, Henry, previously went there, Denise Richard, Ms. Stone said, volunteers as a librarian at the school, and she ran an after-school running club for the children.
Mr. Greenberg, who also helped launch such dewy talents as Hanson and the Jonas Brothers, says Ms. Stone was so inexperienced she arrived without a demo tape of material.
Now 25, with 11 million albums sold world-wide and her own 2006 Grammy Award, Ms. Stone appears on the verge of returning to the charts with "Soul Sessions Vol. 2, " a reprise of her debut due Tuesday (and streaming free until then on iTunes).
Ms. Stone again showcases her powerhouse vocals on the Chi-Lites soul anthem "(For God's Sake) Give More Power to the People, " Broken Bells' "The High Road" and Don Cherry's "Then You Can Tell Me Goodbye" all tracks that wouldn't have sounded out of place on her debut.
Rose and blue quartz stone sculptures by Ms. Abramovic are mounted to the wall near a bay window.
Clarence weighs about 600 to 700 kilos (94 to 110 stone), Ms Jacobs said, and his horns "could pose a threat to humans".
After enrolling at the academy in North Carolina Ms Davis lost nearly half a stone a week.
In 2009, Ms Davis lost more than 12 stone (76kg), seven months after joining a US weight loss programme.
Then aged 15, Ms Davis had previously reportedly weighed 33 stone (210kg).
Ms. HARRELL-MILLER: Like breaking stone, like breaking sand.
Instead of lawns, Ms. Fleming put in lots of natural grasses, gravel courtyards and stone patios.
Mr. Stone says it was "heartbreaking" to do this, but that Ms. Thurman's role may be resurrected in a "director's cut" DVD.
WSJ: Salma Hayek, John Travolta and Benicio Del Toro in Oliver Stone's Savages
The road strategy for "Mormon" is similar to the approach that Mr. Rudin and Ms. Garefino employ in New York, where the musical, created by Matt Stone, Trey Parker and Robert Lopez, plays at the relatively small, 1, 066-seat Eugene O'Neill theater.
In response to further questions from Mr Hankin, Ms Allen said she had seen the defendant lift up bodies of people weighing about 18 stone (114kg) when he was helped by a male colleague.
BBC: Murder accused 'speculated on wife Alethea Taylor's fate'
Ms. Curry has been news anchor at "Today" since 1997, often a role seen as a stepping stone to a hosting gig.
应用推荐