12–18% of the new light-duty vehicle market in California, amounting to annual sales of between 151,200 and 226,800 electric vehicles, approximately ten times the quantity specified by CARB's mandate. The study, however, took care to note that vehicles would require increased range and be sold at prices close to a regular gasoline sedan rather than the premium then demanded for electric vehicles. The results of the Toyota-GM study were questioned in light of the success of Toyota's electric RAV4-EV, which retailed at $30,000, though at this price the RAV4 was sold at a net loss. At the hearings, the automakers also presented the hydrogen vehicle as a better alternative to the gasoline car, bolstered by a recent federal earmark for hydrogen research. Many, including members of the CARB hearing committee, were concerned that this was a bait-and-switch on the automakers' part, in order to make CARB eliminate the EV mandate, and that hydrogen was not as viable an alternative as it was made to seem. CARB had already rolled back deadlines several times, in light of car companies' unreadiness to meet the ZEV requirement. In 2001, it proposed amendments that would grant automakers credit for producing advanced-technology, partial-zero emission vehicles, such as hybrid cars, in place of battery EVs. However, the industry used the relaxation of the rules to challenge the regulation as a whole. General Motors and Daimler-Chrysler filed suit against CARB in the US District Court in the Eastern District of California, successfully arguing that CARB's method of determining whether or not a vehicle qualified as an Advanced Technology Partial ZEV (AT PZEV) used the vehicle's fuel economy as one of the standards, in addition to reduced emissions; according to federal law, states are barred from regulating fuel economy in any way. Judge Robert E. Coyle issued a preliminary injunction on June 11 against the CARB, ruling the provision unconstitutional and preventing the implementation of CARB's 2001 amendments. The mandate was modified, with the zero-emission requirement reduced to at least 250 fuel cell or battery-powered vehicles by 2008. By the end of August 2004, no EV-1s remained on the road, as General Motors had taken back all leased EV-1's from their lessees. One was on display at the Main Street in Motion exhibit at Epcot in Walt Disney World in Lake Buena Vista, Florida. Some of the used EV-1s were donated to tech schools for disassembly and analysis