When you put multiple carts together on a track and push them together, they explode without any power tracks.
http://www.youtube.com/watch?v=90Q0uUwS2fs
MC-11452
Smashing carts together creates an explosion
Resolved
Duplicate
0
MCBlockd
(Unassigned)
Unconfirmed
Minecraft 1.5
Retrieved
Duplicate of MC-7867, please use the search function to see if your bug has already been submitted. Currently over 53% of tickets are being closed as duplicate.