your yaris would rock in the winter with snowtires. its light weight makes it easy to stop and if you are in hazardous conditions would handle at 35mph or less better or as well as anything else out there. i drive a honda civic si (lower suspension then a normal civic) and tears it up in the snow!
every time i pass an upside down vehicle on my way to summit county it is a mid size suv, full size pickup or an excursion/tahoe. those guys all think they are driving proper winter vehicles or something...
It's more about the driver than the vehicle. Those SUVs aren't upside down because it's an SUV, they're upside down because the driver was likely driving like an idiot.