SIENNA UNCONTROLLED ACCELERATION!! IT HAPPENED TO OUR 2006 SIENNA YESTERDAY 2/21/2007 - -MY WIFE WAS ABOUT TO STOP THE CAR WHILE PARKING IT AT A PARKING SPACE, SUDDENLY IT ACCELERATED (VERY FAST!) AND KNOCKED DOWN A TREE AND SCRATCHED A COUPLE OF PARKED CARS. IT TOOK A TREE, SOME BUSHES AND A DOUBLE RAISED CURBS TO STOP THE VAN. THE BUMPER WAS DAMAGED (BY THE TREE) AND THE RIGHT SIDE OF VAN DENTED. MY WIFE IS A CAREFUL DRIVER (AND WITH OUR TWO TODDLERS INSIDE!) AND SHE IS VERY SURE SHE DID NOTHING WRONG. WE ARE VERY CONCERNED TO DRIVE IT AGAIN IF THE REPAIR SHOP CANNOT FIND DEFECT WITH THE VAN. I HAVE A SIMILAR ACCIDENT REPORT HERE: HTTP://TOWNHALL-TALK.EDMUNDS.COM/WEBX?14@@.F105086/0 *JB