Bonneville Salt Flats showing salt crust deterioration were seriously flawed. Despite this, since 1998, the owners of the Wendover potash facility have worked diligently in conjunction with the BLM to undertake the Salt Laydown Project under which solid salt from ponds located south of Interstate 80 is dissolved and pumped onto the Bonneville Salt Flats north of I-80. During the following summer months, heat from the sun vaporizes the water and the precipitated salt becomes part of the race track surface. Since the onset of this project, more than 10.7 million tons of salt have been pumped onto the Bonneville Salt Flats. The
Triumph Speed Four and other minor concessions to its streetfighter style; the frame and fully adjustable suspension are race-ready. The engine is a 599 cc inline-four-cylinder engine, as used in the TT600. The bike has a top speed of and a time of 4.5 seconds. "Motorcyclist" tested the 2002 Speed Four's time at 11.65 seconds @ and time at 3.71 seconds. The Speed Four was voted No.1 for handling and suspension in "Ride" magazine's 2008 Rider Power Survey. The Triumph Daytona 675 was second in the same category. Triumph UK After Sales has confirmed that 4,606 Speed Fours were produced from 2002 through