I am considering the purchase of an '06 Toyota Tacoma. I might pass the Tahoe along to the wife and kids for a good truck. The Toyota Tacoma double cab is on the short list of options, but Toyota is recommending premium gas. Why would a company offer a truck that requires premium gas? It lists 21 as the mpg on the highway, but I assume that is with premium? What would be the negatives if regular 87 octane is used? Does anyone on BITOG have one of these trucks? Any thoughts or feedback. Thanks in advance.