Snake 1.2 (WIP)

My entry for contest.

First I wanted to make one with servos, but they are not powerful enough. So I made this lag creator.
Update 1.1
+ made it shorter
+ changed background
+ got rid of seesaw bases
+ added proximity sensors, so that it wouldn't run in to the walls (which doesn't work)

Update 1.2
+ Lowered forward speed
+ increased turning speed
+ expanded map from 300^2 to 500^2