In Japan, the latest services such as Uber can't offer service because of the strict laws.
書いてくれた文書は問題なく通じますが、もう少しネイティブのような言い方だと:
In Japan, the latest services such as Uber can't offer service because of the strict laws.
確かに調べてみると"newest"とい言葉が出ると思いますがこの場合には"the latest”で
いいと思います。