Driveshaft

 is a Tier 5 Tank that upgrades from Piston and Swarmdrive at level 60.

Design
The has identical barrels to the Piston, but it has Swarmdrive's decorative square on top of it.

Technical
As expected, all of the 's swarms have small, weak turrets on them that fire at enemies.

Trivia

 * A driveshaft is a mechanism that transfers power from an engine to another component. In cars, it transfers the motion of the piston engine to the wheels.