Vertigo Loop is the Race Track in Nimbus Station which goes into space and through a ship under construction. The obstacles are traffic cones infected with the Maelstrom.
During Beta Test Phase, Keelhaul Canyon was released despite Vertigo Loop appearing earlier in the game. To make it easier for players, Velocity Lane's missions were transfered to Swifty McGurk. Using the race starter in Race Place, players were able to access Keelhaul Canyon. Even when Vertigo Loop was released, it did not become required to race for Velocity Lane until the next beta wipe.