Table 2.

The profits of the firms in the four cases.

	Firm 2	F	E
Firm 1
F		${\pi }_1^{FF}=(p_{f1}-{\theta }_1{e}_1^2)d_{f1}$ ${\pi }_2^{FF}=(p_{f2}-{\theta }_2{e}_2^2)d_{f2}$	${\pi }_1^{FE}=(p_{f1}-{\theta }_1{e}_1^2)d_{f1}$ ${\pi }_2^{FE}=(p_{e2}-c_e)d_{e2}$
E		${\pi }_1^{EF}=(p_{e1}-c_e)d_{e1}$ ${\pi }_2^{EF}=(p_{f2}-{\theta }_2{e}_2^2)d_{f2}$	${\pi }_1^{EE}=(p_{e1}-c_e)d_{e1}$ ${\pi }_2^{EE}=(p_{e2}-c_e)d_{e2}$

Note: E and F means the firm produces the pure electric vehicle (the energy-saving fuel vehicle).