I remember seeing that Dr. Gas has about 90-95% of the Nascar/racecar market. Regardless of the age of their equipment it seems to have been getting the job done. My guess is that Aero could not raise the CASH required to buy out Dr. Gas and the shares were falling in price so it was going to be too difficult to buy Dr. Gas and to sustain Aero's money losing operations as well. jmo