Jim 
2007 Toyota Tacoma Double Cab PreRunner V6 4dr Double Cab 6.1 ft. SB (4.0L 6cyl 5A)
Drive 55 mph & Smile
 My best purchase "ever".  Drive 80+ miles daily, and recently slowed down to 55 with the cruise control on.  Best mpg so far is 26 mpg @ 55 mph!  Usually, I'm @ 22-23 mpg, but I consistently drive under 60 mph.  Recent valve rattle is a concern and I will check for technical service bulletins.  Have not missed an oil change, and it cannot be "normal" for a new engine to rattle!  Toyota can be tough, but be persistent and do not accept defects as "normal".  I demanded an engine rebuild @ 108,000 miles on a Camry due to an oil sludge problem caused by an engine re-design in order to receive a higher EPA rating for the 2.4L engine.  The dealer rebuilt the engine, but it took serious effort.  