I find highway acceleration is their main strength actually. Going from "just cruising" to max acceleration is basically instant, unlike a gearbox having to go down 2-3 gears (depending on how hard you press the pedal) and hope it chose the right gear, or manually downshifting (block shifts work with a proper manual gearbox but that's a pain the rest of the time; going down 3 gears sequentially on an automatic is usually not a good time).