Yes, three months is no longer enough, and he now wants to make the gas tax holiday longer.
I still don't think he's going far enough. Why not propose generous gas subsidies? Or at least financial rewards for owning a gas guzzler, since he specifically emphasizes the plight of "low income Americans that [sic] are driving the oldest automobiles."
Funny how the one big case in which McCain emphasizes helping low-income Americans is via a proposal that would not actually do so, given the general consensus among economists that the gas tax holiday would not actually lower prices at the pump.
Although then again, it's not even a proposal - rather, it's just a Kabuki gesture - given that he is not actually proposing legislation to implement it. Last I checked, he was still a Senator.