In 2000, Groscost was defeated by Democrat Jay Blanchard in the historically Republican District 30 of Mesa.
AFV Solutions Inc. announced in July 2005 that Groscost had accepted the offered position with the company, noting "[He has a] unique set of skills and valuable experience".
The firm designs and produces fuel converter systems which allow traditional car engines (which run on petrol or diesel) to function with propane.
[4] In 2000, Groscost ordered a Senate bill through the legislature which presented monetary incentives to citizens to buy road vehicles capable of using alternative fuels, in an attempt to reduce the state's pollution.
The bill was revealed to be so munificent that some motorists who bought alternate fueled cars managed to receive half of what they paid back in tax credits.