I spun my old car once a long time ago. for full 180 degree. i was only doing 20 mph, i tried to control it but there was no grip, was like driving on ice. caught me by surprise just wasn't expecting it at such a slow speed. after the spin i went back round the roundabout and spotted there was a spillage. you know the one with all the colours of the rainbow. was probably oil, petrol ect i also noticed that newly tarmaced sections in the road and roundabouts are very slippery in the wet.