Algodoo

it use my new technology
i planned to make in 2015/8
but i forgot to make
now i remember and made it

nomal susension is algodoo, it use spring(usually)
i made double hinge train suspension(last year)
now this year

it didn't use spring
it didn't use hinge
it use 'a ball'
'a ball'
how interesting

a,s,d to move,test track is on right
have a nice day