Minecarts have uncontrolled momentum with riding entities

Minecarts are unaffected by unpowered powered rails and continues to move with momentum on flat surfaces when non player entities are riding.
-Possibly only with Squid
-NoAI:1 has no effect

Command Used Pre 15w41a:

/summon Pig ~ ~1 ~ {Saddle:1,Invulnerable:1,
Riding:{id:Squid,Invulnerable:1,PersistenceRequired:1,
Riding:{id:Squid,Invulnerable:1,PersistenceRequired:1,
Riding:{id:Squid,Invulnerable:1,PersistenceRequired:1,
Riding:{id:Squid,Invulnerable:1,PersistenceRequired:1,
Riding:{id:MinecartRideable}}}}}}

Command Used Post 15w41a:

/summon MinecartRideable ~ ~1 ~ {
Passengers:[{id:Squid,Invulnerable:1,PersistenceRequired:1,
Passengers:[{id:Squid,Invulnerable:1,PersistenceRequired:1,
Passengers:[{id:Squid,Invulnerable:1,PersistenceRequired:1,
Passengers:[{id:Squid,Invulnerable:1,PersistenceRequired:1,
Passengers:[{id:Pig,Saddle:1,Invulnerable:1,}]}]}]}]}]}