Can't detect the Motion tag of non-mob-entities

http://justforuploadingd.blogspot.com/2015/05/blog-post_24.html (video)

Command:
1.

 /scoreboard players set @e hi 0

after
2.

 /scoreboard players set @e[score_hi=0] hi 1 {Motion:[0.0d,0.0d,0.0d]}

(1 and 2 in redstone block clock)

(I tried 0:0.0d,1:0.0d,2:0.0d and 0.0,0.0,0.0 and 0:0.0,1:0.0,2:0.0 too)

so if I move, my score should be 0, but always 1
Other non-mob-entities, too (like minecarts)
Only for mob-entities works correctly (like villagers)
But if I overlap(more than two entities in one block) with other entity, the score change into 0