Yes, there are many situations where moderate wheelspin is the only way to get -- or keep -- yourself moving. I understand that excessive wheelspin can damage things, but only when excessive. After all, those of us privileged enough to have grown up in states that required Drivers Ed recall the warnings about transmission damage from careless back-and-forth rocking to get unstuck -- but they taught that technique for a reason. By all accounts the Prius' TC is excessively aggressive and cuts power even at a hint of wheelspin. In very slick conditions you can't help but have some wheelspin. And in deep snow (as well as mud and loose gravel) you actually get better traction by breaking the tires loose. Studies have shown ABS to be very detrimental to stopping distances (by as much as 30-40%) in those conditions, because on loose/deep surfaces you can actually stop much faster by locking up the wheels. [This is not true on solid surfaces like wet or dry pavement, hardpacked dirt, packed snow or ice -- then you're better off with ABS].