I'm surprised it can accelerate in EV mode at those speeds, and that is with large AT tires, correct? It seems like you can exploit EV mode better with the LC than with the heavier sequoia, despite the Sequoia being part-time 4X4.I haven't tried the pulse and glide method, but I've been using old school hypermiling techniques to get 20+ per tank. I live in a hilly area and installed large A/T tires, both of which destroy the mileage. The folks getting 24 smartly kept their stock tires.
If you're starting on a flat surface and have no one behind you (and have massive patience ) you can accelerate using just the EV motor. You can easily get up to 7-10mph on EV, which I assume saves a lot of gas along with coasting in EV. For fun I've accelerated up to almost 25mph using just the EV motor. I wish ECO mode would allow slightly more aggressive acceleration in EV before switching to the engine.
Oh, and I have noticed a slight improvement in gas mileage after 2000 miles.