ProblemSolver
[Aug 29 2004, last modified Jun 16 2006]
Car Loudspeaker
(0)
Car Wheels That Go Sideways
(+3, -3)
Crushed Ice Maker
(+9)
Evening Delivery Service
(+2)
EZ Pass Checkout with Smart Shopping Carts
(+1, -3)
Negative One Cent Stamps
(+4, -2)
Underground City Highway System
(-2)
washing machine time since done
(+7)
random,
halfbakery