Yeah, been there, done that.

I couldn't make it up the slight incline outside the Winooski parking garage once when driving my son's car that he still had summer tires on, it just couldn't get enough traction to make it up the incline to Route 15, it was just light snow with a very light ice on the road. I ended up letting it slide back down to the bottom of the incline and parked it in the garage again and took the bus home.