Max Speed

The Max Speed upgrade obviously slighly increases the maximum speed of Turtle when in midair.

Upgrades

 * Level 0: None (20 MPH)
 * Level 1: 40 (23 MPH)
 * Level 2: 80
 * Level 3: 140
 * Level 4: 250
 * Level 5: ?
 * Level 6: ?
 * Level 7: ?
 * Level 8: ?
 * Level 9: ?