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Britain's Queen Elizabeth II receives flowers from seven year old Dina Rayburn, as she hosts a ceremony to celebrate the 40th Anniversary of Motability, at Windsor Castle, west of London on April 25, 2017. Motability is a charity that enables disabled people, their families and carers to lease a new car, scooter or powered wheelchair using their mobility allowance. / AFP PHOTO / POOL / RICHARD POHLE (Photo credit should read RICHARD POHLE/AFP/Getty Images)

Britain's Queen Elizabeth II receives flowers from seven year old Dina Rayburn, as she hosts a ceremony to celebrate the 40th Anniversary of Motability, at Windsor Castle, west of London on April 25, 2017.
Motability is a charity that enables disabled people, their families and carers to lease a new car, scooter or powered wheelchair using their mobility allowance.

 / AFP PHOTO / POOL / RICHARD POHLE        (Photo credit should read RICHARD POHLE/AFP/Getty Images)

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Britain's Queen Elizabeth II inspects the classic invalid carriage, as she hosts a ceremony to celebrate the 40th Anniversary of Motability, at Windsor Castle, west of London on April 25, 2017. Motability is a charity that enables disabled people, their families and carers to lease a new car, scooter or powered wheelchair using their mobility allowance. / AFP PHOTO / POOL / RICHARD POHLE (Photo credit should read RICHARD POHLE/AFP/Getty Images)

Britain's Queen Elizabeth II inspects the classic invalid carriage, as she hosts a ceremony to celebrate the 40th Anniversary of Motability, at Windsor Castle, west of London on April 25, 2017.
Motability is a charity that enables disabled people, their families and carers to lease a new car, scooter or powered wheelchair using their mobility allowance. / AFP PHOTO / POOL / RICHARD POHLE        (Photo credit should read RICHARD POHLE/AFP/Getty Images)

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WINDSOR, ENGLAND - APRIL 25: Queen Elizabeth II talks Edward Todino as she presents him with his new "Motability" vehicle during a ceremony on April 25, 2017 in Windsor, United Kingdom. Queen Elizabeth II hosted a ceremony at Windsor Castle today to celebrate the 40th anniversary of Motability, the charity that has provided a 'road to freedom' for millions of disabled people and their families. Established in 1977 by Lord Sterling and the late Lord Goodman, the Motability Scheme has provided 4.5 million vehicles to date. The Scheme has helped millions of disabled people maintain their ability to get to work or college, attend a medical appointment, meet up with friends and enjoy the freedom and independence that so many people take for granted. Queen Elizabeth II presented five disabled people and their families with the keys to their new vehicles. (Photo by Richard Pohle - WPA Pool /Getty Images)

WINDSOR, ENGLAND - APRIL 25:  Queen Elizabeth II talks Edward Todino as she presents him with his new "Motability" vehicle during a ceremony on April 25, 2017 in Windsor, United Kingdom.  Queen Elizabeth II hosted a ceremony at Windsor Castle today to celebrate the 40th anniversary of Motability, the charity that has provided a 'road to freedom' for millions of disabled people and their families. Established in 1977 by Lord Sterling and the late Lord Goodman, the Motability Scheme has provided 4.5 million vehicles to date. The Scheme has helped millions of disabled people maintain their ability to get to work or college, attend a medical appointment, meet up with friends and enjoy the freedom and independence that so many people take for granted. Queen Elizabeth II presented five disabled people and their families with the keys to their new vehicles. (Photo by Richard Pohle - WPA Pool /Getty Images)

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Britain's Queen Elizabeth II hosts a ceremony to celebrate the 40th Anniversary of Motability, at Windsor Castle, west of London on April 25, 2017. Motability is a charity that enables disabled people, their families and carers to lease a new car, scooter or powered wheelchair using their mobility allowance. / AFP PHOTO / POOL / RICHARD POHLE (Photo credit should read RICHARD POHLE/AFP/Getty Images)

Britain's Queen Elizabeth II hosts a ceremony to celebrate the 40th Anniversary of Motability, at Windsor Castle, west of London on April 25, 2017.
Motability is a charity that enables disabled people, their families and carers to lease a new car, scooter or powered wheelchair using their mobility allowance. / AFP PHOTO / POOL / RICHARD POHLE        (Photo credit should read RICHARD POHLE/AFP/Getty Images)

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WINDSOR, ENGLAND - APRIL 25: Queen Elizabeth II talks to recipients of new "Motability" vehicles during a ceremony on April 25, 2017 in Windsor, United Kingdom. Queen Elizabeth II hosted a ceremony at Windsor Castle today to celebrate the 40th anniversary of Motability, the charity that has provided a road to freedom for millions of disabled people and their families. Established in 1977 by Lord Sterling and the late Lord Goodman, the Motability Scheme has provided 4.5 million vehicles to date. The Scheme has helped millions of disabled people maintain their ability to get to work or college, attend a medical appointment, meet up with friends and enjoy the freedom and independence that so many people take for granted. Queen Elizabeth II presented five disabled people and their families with the keys to their new vehicles. (Photo by Richard Pohle - WPA Pool /Getty Images)

WINDSOR, ENGLAND - APRIL 25:  Queen Elizabeth II talks to recipients of new "Motability" vehicles during a ceremony on April 25, 2017 in Windsor, United Kingdom.  Queen Elizabeth II hosted a ceremony at Windsor Castle today to celebrate the 40th anniversary of Motability, the charity that has provided a road to freedom for millions of disabled people and their families. Established in 1977 by Lord Sterling and the late Lord Goodman, the Motability Scheme has provided 4.5 million vehicles to date. The Scheme has helped millions of disabled people maintain their ability to get to work or college, attend a medical appointment, meet up with friends and enjoy the freedom and independence that so many people take for granted. Queen Elizabeth II presented five disabled people and their families with the keys to their new vehicles. (Photo by Richard Pohle - WPA Pool /Getty Images)